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Catamaran houseboat Smart 40 inboard solar powered 2-cabin

Characteristics

11.95 m (39'02" )

Description

Other arc yachts products.

• Inboard express cruiser
• Flybridge express cruiser
• 6-berth express cruiser
• Catamaran express cruiser
• Inboard trawler
• Fiberglass express cruiser
• Inboard houseboat
• Electric express cruiser
• Wheelhouse trawler
• 2-cabin houseboat
• Electric houseboat
• Displacement hull trawler
• Solar powered houseboat

Arc One: the 350kW electric boat from former SpaceX engineers

We had a chat with mitch lee, co-founder and ceo of arc boats , who tells us about creating a 350kw electric boat and how it has a lot in common with the work his cto and and other team members did on the space x rockets..

With their goal of transitioning marine transportation from fossil fuel to electric “ as quickly as possible “, they have already been out skiing behind and testing demos of their high speed water sport towboat – a remarkable achievement considering they started the company less than 10 months ago.

This is just like we did on the rocket!

Mitch grew up waterskiing, so a water sport boat was a natural for him, but it does come with specific requirements. It needs to be able to go fast enough to get riders up on their skis or boards and also handle a good session of running around the lake towing people.

Fortunately, Mitch is a mechanical engineer by training and a software engineer by trade – and even more fortunately, his university friend Ryan Cook spent 7 years as lead mechanical engineer at SpaceX on the first stage of the Falcon 9 launch vehicle.

As Mitch says in the Plugboats Podcast “ I can’t tell you the number of times we were standing around a whiteboard and somebody on the team said ‘This is just like what we did on the rocket!’. When you think of it, the hull of a boat is pretty similar to the nose of a rocket, and they both need large, strong lightweight structures that can be produced in bulk .”

The Arc One can hit speeds of up to 40 mph and the 200 kWh battery capacity is good for 3-5 hours of regular usage – meaning you pull some riders for awhile, they drop, you pick them up, you go through some no wake zones, etc.

Being electric gives the boat both advantages and challenges. On the plus side, the 350kW (475HP) motor (powerful even for fossil fuel water sport boats) is lighter and smaller than an ICE version. On the not-so-plus side is the weight of the batteries.

The goal was to have the overall weight of the boat come out about the same as existing water sport boats on the market – commonly made of fibreglass and/or other composites like carbon fibre. The team at Arc looked at a variety of materials and finally decided on aluminum. In addition to being light it doesn’t require a mold, making design changes and iterations easier during the development stage of the boat.

200kWh battery for 350kW electric boat

Then there is the 200 kWh battery. (For reference, the energy storage capacity of a Tesla Model-S battery is 85 kWh). The Arc One has two battery packs instead of one. They configure and build the packs themselves, using cells from a well known but undisclosed supplier, and have them situated under the deck of the boat. (Battery cells are made into modules, which are made into battery packs.) This also played into the reasons for choosing aluminum for the hull.

No matter where you put the batteries, though, they are heavy, which turns out to be not all bad. One of the considerations is that the weight of a boat, the way it sits in the water and the way the water is thrown around it is actually somewhat beneficial in creating the wakes for some watersports.

Aside from the technology, the other notable thing about Arc Boats is how quickly they have put all this together. The company was only formed in February and received backing and funding from some notable Silicon Valley finance veterans like Andreesen Horowitz and Chris Sacca’s Lowercarbon Capital . This has given Arc the resources to gather data from demos and move on to improved designs quickly.

Arc is not the only electric boat company catching the eye of investors who specialize in tech and software. The recently launched Edorado has the backing of Dutch technology and media entrepreneur Steven Schuurman, the last round of X Shore investment was headed up by Lukasz Gadowski and his technology holding company Team Europe, and the involvement of TED Curator Chris Anderson has been a big boost for Candela and the introduction of its Candela 8 .

Other models on the way after Arc One

Arc’s goal is to start to deliver the first limited edition of the Arc One boats to customers by the beginning of 2022, and have them all in the water within a year. With a price of US$300,000 Mitch readily admits that it is not for everyone, but for a very specific kind of person – “ the kind of people who wish they’d got that first Tesla Roadster .”

The long term plan for Arc Boats is to be a major competitor in the water sports market, then continue to grow beyond to general sports boats – all of them all-electric, of course. On their way to this goal, they will have at least one model in development at any given moment.

Mitch is quite emphatic when he says “ We are not looking to sell a few boats and they’re kind of concept boats and it’s kind of cool. Our goal as a company is to be a major player, to mass produce electric boats and get them out to the market with a performance package that is compelling, and at a price point that is compelling. This electric industry is starting to take off, and the faster it comes, the better for everyone .”

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Exciting things are happening every day in electric boats and boating. subscribe to the plugboats newsletter so you don't miss a thing (or follow us on social media).

• New electric outboard wins 2 awards at Newport Boat Show
• WaVeS #4: arcs, sparks and electric boat news

2 thoughts on “ Arc One: the 350kW electric boat from former SpaceX engineers ”

Why on earth would they not use hydrofoils? With a 75% reduction in drag, they could ditch at least one battery (eg Candela).

How much does the boat weigh?

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Silent Yachts

Creators of the world’s first series produced, solar-powered electric yachts.

Unlimited Range

Noiseless cruising, zero emission, minimal maintenance, pioneering solar powered yachting since 2009.

The Original Solar Yacht

As the original inventors of series produced solar-electric yachts, we pioneered this innovative approach. Our first model, the Silent 64, was launched to the market in 2016, several years before any other shipyard considered the possibility of going electric.

Leading Technology

Our founders began to research alternative energy sources to power yachts during the mid 1990s. Today, the technology of our in-house developed solar-electric drivetrain has been perfected and is multiple generations ahead in terms of reliability, performance and efficiency.

Historical Track-Record

In 2009, the Solarwave 46 was launched as our first prototype of a fully solar-electric, self-sufficient ocean-going catamaran. Since then, our electric yachts have cruised many 10.000s of nautical miles, performing flawlessly during a variety of weather conditions.

Enabling Self-Sufficiency

What differentiates a Silent is the unprecedented level of autonomy provided by our yachts. Being able to produce your own energy enables a fully self-sufficient lifestyle on board. Travel the oceans sustainably while making them your infinite playground.

The award-winning entry to solar-electric yachts.

Timeless design meets state-of-the-art technology.

120 Explorer

The boldest expression of solar powered yachting yet.

What Makes Us Unique

The tranquility on board of our yachts is unique. A lack of noise, fumes and vibrations create a deep connection with the sea. Luxury and sustainability finally merged into a holistic experience, working hand in hand with nature by minimizing the impact on the marine environment without compromising comfort.

For optimal performance and efficiency, our solar-electric drivetrain integrates seamlessly with all onboard systems. Compared to fossil fuelled powertrains of motoryachts, electric powertrains have very few moving parts, resulting in minimal maintenance, maximum reliability and significantly lower running costs.

The ability to recharge your own batteries with the sun marks a new era of freedom. Depending on cruising speeds and weather conditions, a Silent has virtually unlimited range, enabling you to live a fully self-sufficient lifestyle on board. Unbound by the limitations of fossil fuels, you are free to explore the horizons.

The technology powering our yachts today has been pioneered by our founders almost three decades ago. Continuous upgrading and steady optimization of the entire system are some of the key reasons our in-house developed solar-electric drivetrain offers a comprehensive portfolio of assurances and warranties.

Why Silent Yachts

A sensible approach to yachting which works in self-sufficient harmony with nature and creates a completely new experience on board.

Tech Corner

Why a Solar Powered Yacht?

Let’s break down the advantages of harnessing the sun’s energy for yacht propulsion: solar power offers remarkable efficiency, significant environmental benefits, and an unmatched synergy with the yachting experience. Join us as we dive into the future of sustainable yachting and discover how solar-powered yachts are revolutionizing the seas.

Living on a Silent 62 Solar Electric yacht

Silent Yachts’ range is designed to harness the power of the sun, providing green energy and silent cruising. But what can owners truly expect? How much power does the Silent 62 use while cruising? In this article, we evaluate a typical day onboard the Silent 62, based on actual data from our yachts.

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“The Tesla of the seas! An amazing founding couple, a highly innovative product as well as a really cool story behind it. Furthermore, a lot of love and attention has been invested into every single detail – truly impressive!” Frank Thelen / TV Personality, Founder, Angel Investor & Disruption Expert

While the present has brought us the dawn of smart cars, I strongly believe the future will bring us solar powered smart boats – and I definitely want to be at the frontline of that journey. Michael Jost / Former Head of Group Strategy of Volkswagen Group

The idea of sailing while charging your own battery is super powerful to me – solar powered sailing is the perfect love story! Jochen Rudat / Former Tesla Central Europa Director, Advisory Board Silent Group

Elon Musk single handedly forced an entire industry to go electric, as a matter of fact if they don’t all go electric now they will soon die. I would like to see the same thing happening for boating. You are not just selling boats – you are the actual leading edge of a crucial and much overdue revolution to sustainable transport!” Klaus Obermeyer / Emmy Award Winner

I am completely excited about solar catamarans. I knew before they are great but now I truly believe this is the future. After so many boats I’ve seen in over 18 years with Boote Exclusiv, this yacht truly blew my mind. Such a silent and peaceful cruising experience – just the way it should be. Martin Hager / Editor in Chief for Boote Exclusiv - Yachts

The Arc One is an electric boat with a battery pack three times the size of Tesla’s

Electric boat startup arc is ready for customer deliveries later this year.

By Andrew J. Hawkins , transportation editor with 10+ years of experience who covers EVs, public transportation, and aviation. His work has appeared in The New York Daily News and City & State.

Share this story

Electric boat startup Arc revealed new images and a video of the pre-production version of the Arc One, a 24-foot-long vessel with a massive battery pack and an elegant design. The company has raised $30 million from a group of prominent investors that include Will Smith, Kevin Durant, and Sean “Diddy” Combs.

The company has already tested an early prototype, and the reveal of its pre-production version is meant to send the signal that the company is getting closer to customer deliveries, which are on schedule for this summer.

The specs of the Arc One have changed slightly since the company first came out of stealth last year. The boat will still have a top speed of around 40 miles per hour and can last about four hours under power before needing to be recharged — which the startup claims is plenty for a day out on the water.

But instead of a 200kWh battery pack capable of powering an electric motor with at least 475 horsepower, the boat will come with a 220kWh pack capable of powering a motor with over 500 horsepower. That makes the Arc One’s battery pack three times the size of a Tesla Model Y, said Arc CEO Mitch Lee.

“It’s a lot”

“It’s a lot,” Lee said in an interview. “It’s actually split into two packs.”

Unlike with cars, a heavy battery pack is not a drawback for an electric boat, Lee argued. “The more a boat weighs, generally the more stable it is,” he said. “Especially for the water sports market, heavier boats means that you can throw a wake for somebody to wakeboard behind.”

Lee said the Arc One will be a limited edition luxury cruise that will retail for $300,000. The company is hoping to follow in Tesla’s footsteps by selling a high-priced, low-volume boat from which it will use the revenues to fund the production of a lower-cost model.

“It’s premium, and it only appeals to a subset of people,” he said. “We want to get into the Model S-type of price range where it’s premium to the market.”

That could include other water sport vehicles, like jet skis, or even commercial vessels, like ferries, Lee said. “That is absolutely what we have in mind.”

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Yachting Monthly

• Digital edition

Sailing with solar power: A practical guide

• Duncan Kent
• November 13, 2020

The latest solar technology makes self-sufficient cruising much more achievable. Duncan Kent gives the lowdown on everything you need to get your boat sorted

SOLAR POWER ON BOARD

Solar power is fast becoming the most popular and economic method of keeping the batteries charged on a boat.

Particularly now that the efficiency of photovoltaic (PV) panels, charge controllers and batteries is improving every day.

Furthermore, the latest technology in regulators and charge controllers has brought about a noticeable increase in useable power output, so the problems of shading and non-alignment can be compensated for more easily.

Not only has PV equipment become more efficient and cost-effective, but many of the modern devices we want to use on a boat have become less power hungry.

This means it is now far easier to provide your entire yacht’s electrical needs, both 220Vac and 12/24Vdc, from natural energy resources – particularly solar power, even if you are planning on a fully electric boat .

Thinking carefully about how much power you need and how much your boat can accommodate is key to planning a solar array. Credit: Graham Snook

WHAT DO YOU NEED?

For instance, a boat with two new, good quality, deep-cycle house batteries of 100Ah each would supply 100Ah of energy to consume between charges, if you only use the recommended 50% of available charge between each charge cycle to protect the batteries.

From this you could run:

• a modern 12Vdc fridge (approx. 1.5Ah, or 36Ah over 24hrs),
• all LED lighting (say 20Ah per day),
• various small device chargers (20Ah)
• and a number of other items such as water pumps, TVs and stereos (25Ah/day)
• Totalling around 100Ah.
• For this you’d need 400W of solar capacity.

Of course, if you like to run a lot of AC devices off-grid such as hair dryers, microwaves, toasters and the like, then you’re going to need a DC/ AC inverter, which will take you to another level in power consumption terms.

But even then, with careful planning, solar could provide a large portion of the power you need before resorting to engine charging or a generator.

THE AVAILABLE SPACE

In practical terms, a modern 40ft monohull would have the space for around 1,200W of PV panels (cockpit arch, sprayhood top, deck), maybe 1,500W with the addition of a few portable panels for use at anchor.

The 1,200W of fixed position solar array could produce around 360Ah on a sunny summer’s day (zero shading) or more likely 250Ah on the average UK summer’s day.

So that’s enough for your 100Ah general DC consumption plus another 150Ah of AC consumption via the inverter.

Of course, to do this you’ll most likely need to increase your battery capacity to around 400-500Ah for maximum flexibility (you’ll need to store as much as possible during daylight hours), a typical figure for a 40-50ft offshore cruising yacht these days.

Get your solar charging right and you may never need to hook up to shore power

Typical daily inverter loads for a cruising yacht off grid might be:

• induction cooking plate (20min) 60Ah
• microwave (15min) 30Ah
• coffee maker (20mins) 25Ah
• hair dryer (5min) 15Ah
• laptop charger (2h) 10Ah
• or around 140Ah in total.

The trick is to monitor the batteries’ state of charge (SOC) at all times and vary your use of the inverter to suit.

For example, you might want to cook supper mid-afternoon, when solar is in abundance, and then reheat it in the evening when you want to eat it.

In some cases, when you’re cruising in warm climates such as the Med, you might end up with excess charge from your solar panels .

In this situation, many long-term cruisers devise a method of ‘dumping’ the extra energy by heating water for showers.

Do bear in mind if you’re planning to live aboard full time , then it’ll be a whole different story on cloudy days and during the winter, when inverter use might need to be knocked on the head entirely.

Continues below…

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POWER DISCREPANCIES

There’s often confusion as to how much power you can harvest from a solar installation.

A PV panel is nearly always advertised stating its theoretical peak output power (Pw).

But in reality, on a yacht where there are limited areas in which to mount them, they will more likely produce a maximum of 60% of their peak output if mounted horizontally, increasing to 80% if tilted towards the sun and regularly adjusted.

The latter is rarely achievable on a boat, however, as even at anchor it can swing through an arc of 180° in wind or tidal shifts .

Flexible panels can be mounted on sprayhoods or awnings to add power when it’s needed at anchor or in harbour

INSTALLATION

Having trawled through hundreds of ‘deals’ to get the best price on the most efficient panels you can afford you now need to know how to install them to best fulfill your energy generation needs.

The output, even from the highest quality photo-voltaic array, will only be as good as the installation itself.

So following our guidelines should ensure you extract every last drop of energy from your investment.

PANEL MOUNTING

Sailing boats are not the ideal structure on which to mount wide, flat PV panels.

So before you go ahead and purchase what looks like the biggest and best, take a few minutes to decide on exactly where you can mount them, as this will affect what size and type of panels you should buy.

In many cases the first choice would be on an arch, davits or gantry aft, especially if you already have, or plan to fit one.

Dinghy davits, particularly on multihulls, can support a huge solar capacity

These allow a solid metal framework to be constructed that will be strong enough to take the heavier, more productive rigid PV panels.

You can also build in some form of adjuster to the framework that will allow the panels to be orientated towards the sun for the best performance.

With luck (or careful planning) a gantry will also keep them aft of the boom, thereby eliminating loss of output caused by boom shading.

The next most popular position for mounting the panels is on a cockpit sprayhood or bimini, although this will often mean using the flexible or semi-flexible panels, which are generally less efficient than the rigid ones for the same area.

ELEVATED MOUNTING

Alternatively, there are kits available for mounting panels onto lifelines, which can allow their elevation to be manually adjusted to a certain degree.

Pole-mounted panels can be used for maximum adjustability

Finally, panels can be fitted directly onto the deck by either gluing them down using mastic or attaching them onto a rigid support frame.

Once again you will probably need to use semi-flexible panels – especially if the deck surface is curved.

Rigid, glass-coated panels will obviously not be suitable for deck mounting in an area that is frequently walked over.

Don’t be tempted to drill through the panels, even along the edges, as this will invalidate the warranty and possibly damage the panel.

With solid panels, the ability to adjust the angle can add significantly to output

It might seem obvious, but the key to an efficient system is to avoid shading wherever possible.

It’s no good fitting expensive, high-efficiency PVs right under the boom as they’ll perform little better than the cheaper types.

Saying that, in good quality panels each cell will be isolated from the next by a series of diodes (one-way electrical valves), so that if one cell is shaded at least it won’t drag down the other cells within the same panel.

Older panels often didn’t have these, so the slightest partial shading caused the output of the entire panel to cease.

OVERHEATING

Another important factor that is often ignored when installing the panels is that of overheating.

If a PV panel gets too hot, which is quite likely if mounted directly onto a flat surface without an air gap behind, its output will drop quite noticeably.

To allow for some air circulation behind the panels it’s best to apply mastic adhesive in numerous large dabs.

This is best achieved by placing wooden spacer strips between the dabs until the mastic has completely cured, after which the spacers can be removed.

You might need some form of trim around one or more of the outside edges, though, if they are positioned where sheets and other lines might get caught under them.

Raising the panels up will also help water to drain off and thereby helping to avoid possible delamination from sitting in water for too long.

CHARGE CONTROL

A PV module cannot supply an electrical device directly due to the changeability of the sunlight, which in turns varies the current it can produce.

Therefore, it has to be connected to a battery, which stores and smooths its output.

Whatever the size of your solar array you will need to fit a regulator, or charge controller as they are now more commonly known, to the system in order to control the output and to help extract as much power from the panels as possible.

There are two types of PV charge controller.

The older designs, called Pulse Width Modulation (PWM) types, were fairly basic voltage regulators and simply output volts at just above battery level.

The latest controllers use Multi Power Point Tracking (MPPT) technology and can accept much higher input voltages (up to 240Vdc).

MPPT controllers can be up to 30% more efficient as they use the peak output of the panels to charge the batteries, even compensating for partial shading.

BEWARE FAKE GEAR

If you buy online do be careful to ensure you’re getting what you pay for.

There are a huge number of fake MPPTs out there, which are simply the much cheaper PWM dressed up with fake labels.

It’s hard to tell which is which, but the old adage of ‘if it looks too good to be true, it usually is’ makes good sense.

MPPT controllers are usually bigger and heavier than PWMs, but if in doubt call or email the supplier to discuss the pros and cons of their kit before buying.

If they’re not happy to chat and advise you then I would steer clear of their gear.

Some good MPPTs are made in China, but unless they have a UK supplier, I wouldn’t bother with them as you’ll have no follow-up advice.

To calculate what size controller you need simply divide the panel’s peak power in Watts (Wp) by the battery voltage, which will give you the maximum current (Amps) they could theoretically supply.

For example 240W/12V = 20A. Although it’s unlikely you’ll ever get near the peak output from any PV panel, it’s best to go for the maximum possible.

Induction cooking is now a reality on board, even without shore power

PV panels come with a short length of cable, usually around 1m long.

Some are supplied with MC4 connectors already attached but most only provide bare wires.

The latter can be easily extended using proper waterproof connections but thought must be given as to the current rating and voltage drop (usually max 3%) for the size of cable you intend to use.

If in doubt, bigger is better!

Panels can sometimes be ordered with the wiring on the back so that the cable can go straight below deck through a hole under the panel.

You may need to fit extra battery capacity if you want to run an inverter from solar charging

SERIES OR PARALLEL?

A commonly asked question is ‘should I wire my PV panels in series or in parallel?’

The simple answer is, if there’s any danger of frequent shading to one or more of the panels then install them in parallel.

If wired in series the shading of a single panel will drag down the output from all of the others in the same series.

PARALLEL IS PREFERRED

Most commonly, multiple panels are wired together in parallel to a single charge controller, with diodes protecting each panel from discharging the others should one become partially shaded.

With the advent of MPPT controllers, however, there can sometimes be a benefit to wiring two or more identical panels into a series bank, thereby presenting a higher voltage to the controller.

It’s worth noting that, like batteries, wiring PV panels in series increases the voltage only – the current capacity of the array remains the same as for a single panel.

‘Where’s the benefit of wiring them in series then?’ you might ask.

Well, the higher the voltage fed into the MPPT, the more consistent it will be with its output, which could, in some cases, prove more efficient than a parallel installation with PWM controllers.

It’s also likely to be necessary if you have a 24V domestic system.

SERIES WIRING

Series wiring is usually only done when the cable runs are long, as it helps negate the voltage drop caused by the resistance of the cable.

While a decent controller will have no problem handling the output from four or even five panels wired in series, it is often inappropriate for sailing yachts as shading just one of the panels will reduce the output of the entire series array.

If you need to do so in order to reduce cable runs then it’s best to split the panels between each side of the boat – a series bank on each side.

If you do this, then you would ideally fit a separate controller to each series PV bank and then connect their outputs together in parallel to the battery bank.

Note, however, that panels wired in series must all be the same types with an equal number of cells per panel.

Furthermore, the charge controller needs to be sized for the total of all panel voltages added together and the current rating of one individual panel.

Differently rated panels can be connected together in parallel but only if each panel has its own controller.

The outputs of the individual controllers can then be joined together to go to the battery bank.

BATTERY BANK QUESTION

Another frequently asked question is ‘Can I connect another charging source to the battery bank while the solar array is charging?’

The answer is yes.

Any decent PV controller will be protected against feedback from other charging sources.

Think carefully about where shade from mast, boom and rigging will fall. Credit: Graham Snook Photography

CABLE SIZE AND CONNECTORS

A frequent cause of reduced output from PV arrays is wiring that is too small.

The resistance of a wire conductor increases in direct proportion to its cross-sectional area, so go as big as is practicable for the least cable loss.

Each panel should be supplied with the correctly sized cables for its own maximum output.

But if you’re combining panels, either in parallel or in series, you will clearly need to rate the single feed cable to suit the maximum current available at theoretical peak solar output and to minimise voltage drop.

Likewise, the cable from the controller to the batteries should be sized to suit the controller’s maximum output current and protected with a fuse.

For outside it’s important to use exterior grade cable, which is double- insulated and UV-proof.

WEATHERPROOF CONNECTORS

And wherever possible use compatible weatherproof connectors (usually MC4) to those found on the panels rather than cutting off the plugs and hard-wiring them.

Field- assembly MC4 plugs are available, so you don’t have to drill large holes in the decks or bulkheads when feeding the cables through.

When joining more than one panel together try to use the approved multiway connectors; not only do they keep the wiring neat and tidy, but they also offer a greater contact area than budget terminal blocks.

If you have to use screw-type connectors make sure to fit proper ferrules to the wire first to avoid any stray wires in the multistrand shorting across the terminals.

When feeding a cable from above to below deck, try to go through an upright bulkhead where possible to minimise ‘pooling’ of water around the access hole.

Also, use a proper watertight deck seal that matches the cable you’re using.

If drilling through a cored deck you need to drill a larger hole first, fill it with epoxy resin and then drill the required size hole through the epoxy to ensure no water gets into the deck core.

Ideally, the charge controller should be mounted no further than 2m from the battery bank.

If you need to go further, you’ll require larger cabling to reduce the voltage drop.

A generous solar array will keep you self- sufficient indefinitely. Credit: Graham Snook Photography

CONTROLLER LOAD TERMINALS

There is often confusion over the ‘load’ output of a charge controller (often depicted by a light bulb) and what can safely be connected to these terminals.

Rarely explained in the manual, the load terminals should be pretty much ignored in a marine installation as the output on these terminals is usually very limited (10A max).

Some attach an LED light to them to indicate the controller is operating, but all your usual electrical loads should remain connected to the batteries with the battery terminals on the controller connected directly to that battery bank via a fuse.

It is possible, though, to control a high-current switching relay in certain conditions.

Parallel installation is more resilient to shading, but a series installation will increase peak charging outputs. A combination of the two offers some of the benefit of both

CIRCUIT MONITORING

Unlike most cheap PWMs, the majority of good quality MPPT charge controllers come with an alphanumeric LCD screen to let you know what is going on.

This can either be a remote display or simply one on the front of the box.

It’s obviously a lot better to have a proper numerical display than to rely on a few flashing LEDs to tell you when something’s not right.

So if your chosen controller doesn’t have one be sure to fit a battery monitor (the shunt type) into your solar circuit between the controller and the batteries.

It doesn’t have to be a very ‘smart’ monitor, just one that can display the voltage and current being supplied by the panels.

For smartphone addicts there are several wifi apps that will do the job remotely on your phone or tablet.

DEVICE PROTECTION

All good quality PV panels feature built-in diode protection between each cell to prevent a shaded cell from dragging down the productive ones.

In addition, there will be internal blocking diodes on the final output to protect the panel from polarity reversal and to ensure that the batteries can’t discharge back into the panel during the night.

The latter can be added externally, the former can’t, so check before you buy.

A fuse, rated just above the maximum current available, should be fitted between each panel and the charge controller.

Another fuse should then be installed between the charge controller’s output and the batteries.

In the case of multiple arrays, this second fuse will be rated higher than the individual panel fuses and should match the maximum current rating of the cable.

With this protection installed other charging devices can be connected in parallel at the battery, meaning the solar can be left connected even when you are hooked up to shore power and the battery charger is operating.

In some circumstances, however, this arrangement can affect the sensing of the battery by the charger, causing it to fall back into float mode.

If this becomes apparent it can be overcome by installing a manual/auto switch to disconnect the solar array when on shore power.

Check the flex of the solar panel is sufficient for your deck

EXCESS POWER DUMPING

A solar charge controller works by disconnecting the supply from the PV panels when the batteries are fully charged.

But for some full-time liveaboards in sunny climates that can be considered a waste, when the excess power could be put to good use – heating water, say.

This is commonly done using an inverter to supply AC power to the heating element.

Alternatively, you can now buy a 12Vdc element for your calorifier (hot water tank) and supply this directly from your battery bank.

Both of these methods would require a voltage sensitive relay (VSR) to disconnect the element should the battery voltage drop below a pre-set level.

Don’t expect boiling hot water, as there will probably only be enough spare power to take the chill off it before your battery bank reaches its lower threshold voltage.

A 600W/12V element will draw some 50A, from the batteries, whereas a 1kW AC element run through an inverter will need close to 100A.

A small, semi-flexible panel will be sufficient for keeping batteries trickle charged, but not for heavy use

RIGID, FLEXIBLE, OR SEMI FLEXIBLE?

Despite massive recent improvements in semi-flexible panels in recent years, the solid glass panels still offer a higher power density.

That said, they are heavier, more awkward to mount and can’t be walked on, so unless you have a dedicated gantry aft, you’re better off choosing the more rugged semi-flexibles.

Modules incorporating monocrystalline cells also have a better output than those with polycrystalline cells (that’s cells made from a single slice of silicon as opposed to layers of smaller pieces).

Output voltage also depends on the number of cells on the panel.

In the past this has commonly been 32, but now some 36 and even 40 cell panels are available.

That said, they’re larger, of course, so an array of interconnected smaller panels might be a better solution.

Module efficiency is now more often around the 20% mark, as opposed to 12-15% for older models and semi- flexible (up to 20° bend) are usually better than flexible (up to 180° bend).

A rigid panel is more efficient, but less robust

There are a huge number of panels on the market, but many use the same cells.

Sunpower Maxeon cells are exceptionally good, as are the Panasonic HIT range and LG, but they are pricey.

If the maker is offering a 25-year guarantee instead of a 3-5 year one, you can be pretty confident they’re good.

When it comes to charge controllers it’s definitely worth paying a little more for a decent MPPT.

A cheap PWM might be okay just to keep a small starter battery charged with a 30W panel, but the MPPT will give you much more when it comes to heavy service.

Victron are probably top of the range, while cheaper brands like MakeSkyBlue and EPever are also good value – but treat imports of unclear origin with care.

ABOUT THE AUTHOR

Duncan Kent has been evaluating and reviewing yachts and marine equipment for the past 30 years

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• Oct 23, 2023

Solar panels on World ARC 2023

We have been running Sun Powered Yachts for 5 years and the number of boats going solar is on the increase. It's palpable, you can walk the docks at your local marina, look around the anchorages and it's easy to notice that solar is on the rise. In fact I wonder if there are now more boats with solar panels than without?

It's hard to put an exact number on how many boats have solar aboard but we're keen to do some more research. We reached out to World Cruising Club in Cowes (UK) to see what data we could pull from their ARC sailing rallies. As you may know we recently sailed on the ARC 2021 on our own boat ('Blake' - a Dufour 382) and this is World Cruising Club's signature rally across the Atlantic with typically well over 200 cruising sailboats taking part each November. I have also personally worked for World Cruising Club starting in 2009 as a "yellow shirt" and going on to be the Event Manager for ARC Europe (the return crossing) for 10 years.

World ARC route map

We took a look at the numbers on the recent edition of the World ARC 2023, this includes the boats that started their circumnavigation in Saint Lucia and those that started in Australia, but also those that stopped in Australia after crossing the Pacific.

So in total there were 60 boats surveyed, 34 had solar, 15 did not and 11 boats did not specify.

57% of boats have solar aboard with an average of 646W

What is the World ARC?

World ARC is a round-the-world adventure taking place over 15 months and covering 26,000 nautical miles. Following the classic tradewinds route, the rally avoids regions of political instability, piracy and the storm seasons in both hemispheres. You can join in Saint Lucia or in Australia, and sail a half rally or make the whole circumnavigation. Boats leaving after a half rally can join the next edition to complete their circumnavigation.

If you are wondering where the World ARC fleet is right now, you can check out the fleet viewer . Each boat has a YB tracker aboard and is updated regularly each day.

Where are the boats now?

We look forward to doing further research into how many ARC rally boats have solar, and just boats in general. Going solar aboard is certainly a growing trend that we are very pleased to see.

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37 Facts About Novosibirsk

Written by Adelice Lindemann

Modified & Updated: 05 Sep 2024

Reviewed by Sherman Smith

Novosibirsk, often referred to as the “Capital of Siberia,” is a vibrant and dynamic city located in southwestern Russia. With a population exceeding 1.5 million residents, it is the third most populous city in Russia and serves as the administrative center of the Novosibirsk Oblast.

Nestled along the banks of the Ob River, Novosibirsk is renowned for its rich cultural heritage, scientific advancements, and picturesque landscapes. As the largest city in Siberia, it offers a perfect blend of modern and traditional attractions, making it a fascinating destination for both locals and tourists.

In this article, we will delve into 37 interesting facts about Novosibirsk, shedding light on its history, architecture, natural wonders, and cultural significance. Whether you are planning a visit or simply curious about this intriguing city, these facts will give you a deeper understanding of what Novosibirsk has to offer.

Key Takeaways:

• Novosibirsk, the “Capital of Siberia,” is a vibrant city with a rich cultural scene, stunning natural landscapes, and a strong sense of community, offering a high quality of life for its residents.
• From being a major industrial and transportation hub to hosting world-class cultural institutions and scientific research centers, Novosibirsk is a dynamic city with a diverse culinary scene and a thriving IT and tech industry.

Novosibirsk is the third-largest city in Russia.

Situated in southwestern Siberia, Novosibirsk has a population of over 1.6 million people, making it one of the largest and most vibrant cities in the country.

The city was founded in 1893.

Novosibirsk was established as a railway junction on the Trans-Siberian Railway, playing a significant role in the development of Siberia.

It is known as the “Capital of Siberia”.

Due to its economic and cultural significance, Novosibirsk is often referred to as the capital of Siberia.

Novosibirsk is a major industrial center.

The city is home to a wide range of industries, including machinery manufacturing, chemical production, energy, and metallurgy .

It is famous for its scientific and research institutions.

Novosibirsk hosts several renowned scientific and research institutions, contributing to advancements in various fields including nuclear physics, chemistry, and biotechnology.

The Novosibirsk Opera and Ballet Theatre is one of the largest in Russia.

This iconic cultural institution showcases world-class ballet and opera performances and is a must-visit for art enthusiasts visiting the city .

The city has a vibrant theater scene.

Novosibirsk boasts numerous theaters, showcasing a wide variety of performances from traditional plays to experimental productions.

Novosibirsk is a major transportation hub.

Thanks to its strategic location on the Trans-Siberian Railway, the city serves as a crucial transportation hub connecting Siberia with other regions of Russia .

The Ob River flows through Novosibirsk.

The majestic Ob River adds to the city’s natural beauty and provides opportunities for recreational activities such as boating and fishing.

Novosibirsk is known for its harsh winter climate.

With temperatures dropping well below freezing in winter, the city experiences a true Siberian winter with snowy landscapes.

The Novosibirsk Zoo is one of the largest and oldest in Russia.

Home to a wide variety of animal species, including rare and endangered ones, the Novosibirsk Zoo attracts visitors from near and far.

Novosibirsk is a center for academic excellence.

The city is home to Novosibirsk State University, one of the top universities in Russia, renowned for its research and education programs.

The Novosibirsk Metro is the newest metro system in Russia.

Opened in 1985, the Novosibirsk Metro provides efficient transportation for residents and visitors alike.

Novosibirsk is surrounded by picturesque nature.

Surrounded by stunning landscapes, including the Altai Mountains and the Novosibirsk Reservoir, the city offers numerous opportunities for outdoor activities.

The Novosibirsk State Circus is famous for its performances.

Showcasing talented acrobats , clowns, and animal acts, the Novosibirsk State Circus offers entertaining shows for all ages.

Novosibirsk is home to a thriving art scene.

The city is dotted with art galleries, showcasing the works of local and international artists .

Novosibirsk has a diverse culinary scene.

From traditional Russian cuisine to international flavors, the city offers a wide range of dining options to satisfy all taste buds.

The Novosibirsk State Museum of Local History is a treasure trove of historical artifacts.

Exploring the museum gives visitors an insight into the rich history and culture of the region.

Novosibirsk is known for its vibrant nightlife.

The city is home to numerous bars, clubs, and entertainment venues, ensuring a lively atmosphere after dark.

Novosibirsk has a strong ice hockey tradition.

Ice hockey is a popular sport in the city, with local teams competing in national and international tournaments.

The Novosibirsk State Philharmonic Hall hosts world-class musical performances.

Music lovers can enjoy classical concerts and symphony orchestra performances in this renowned venue.

Novosibirsk is home to the Akademgorodok, a scientific research town.

Akademgorodok is a unique scientific community located near Novosibirsk, housing numerous research institutes and academic organizations.

Novosibirsk has a unique blend of architectural styles.

The city features a mix of Soviet-era buildings, modern skyscrapers, and historic structures, creating an eclectic cityscape.

Novosibirsk is an important center for ballet training and education.

The city’s ballet schools and academies attract aspiring dancers from across Russia and abroad.

Novosibirsk is a gateway to the stunning Altai Mountains.

Located nearby, the Altai Mountains offer breathtaking landscapes, hiking trails, and opportunities for outdoor adventures.

Novosibirsk hosts various cultural festivals throughout the year.

From music and theater festivals to art exhibitions, the city’s cultural calendar is always packed with exciting events.

Novosibirsk is a green city with numerous parks and gardens.

Residents and visitors can enjoy the beauty of nature in the city’s well-maintained parks and botanical gardens.

Novosibirsk is a center for technology and innovation.

The city is home to several technology parks and innovation centers, fostering the development of cutting-edge technologies.

Novosibirsk has a strong sense of community.

The residents of Novosibirsk are known for their hospitality and friendly nature, making visitors feel welcome.

Novosibirsk is a paradise for shopping enthusiasts.

The city is dotted with shopping malls, boutiques, and markets, offering a wide range of shopping options.

Novosibirsk has a rich literary heritage.

The city has been home to many famous Russian writers and poets, and their works are celebrated in literary circles.

Novosibirsk is a popular destination for medical tourism.

The city is known for its advanced medical facilities and expertise, attracting patients from around the world.

Novosibirsk has a well-developed public transportation system.

With buses, trams, trolleybuses, and the metro, getting around the city is convenient and efficient.

Novosibirsk is a city of sport.

The city has a strong sports culture, with numerous sports facilities and opportunities for athletic activities .

Novosibirsk has a thriving IT and tech industry.

The city is home to numerous IT companies and startups, contributing to the development of the digital economy.

Novosibirsk celebrates its anniversary every year on July 12th.

The city comes alive with festivities, including concerts, fireworks, and cultural events, to commemorate its foundation.

Novosibirsk offers a high quality of life.

With its excellent educational and healthcare systems, cultural amenities, and vibrant community, Novosibirsk provides a great living environment for its residents.

Novosibirsk is a fascinating city filled with rich history, stunning architecture, and a vibrant cultural scene. From its origins as a small village to becoming the third-largest city in Russia, Novosibirsk has emerged as a major economic and cultural hub in Siberia . With its world-class universities, theaters, museums, and natural attractions, Novosibirsk offers a myriad of experiences for visitors.

Whether you’re exploring the impressive Novosibirsk Opera and Ballet Theater, strolling along the picturesque banks of the Ob River, or immersing yourself in the city’s scientific and technological achievements at the Akademgorodok, Novosibirsk has something for everyone.

From its iconic landmarks such as the Alexander Nevsky Cathedral to its vibrant festivals like the International Jazz Festival , Novosibirsk has a unique charm that will captivate any traveler. So, make sure to include Novosibirsk in your travel itinerary and discover the hidden gems of this remarkable city.

Q: What is the population of Novosibirsk?

A: As of 2021, the estimated population of Novosibirsk is around 1.6 million people.

Q: Is Novosibirsk a safe city to visit?

A: Novosibirsk is generally considered a safe city for tourists. However, it is always recommended to take standard precautions such as avoiding unfamiliar areas at night and keeping your belongings secure.

Q: What is the best time to visit Novosibirsk?

A: The best time to visit Novosibirsk is during the summer months of June to September when the weather is pleasant and suitable for outdoor activities. However, if you enjoy the winter chill and snow, visiting during the winter season can also be a unique experience.

Q: Are there any interesting cultural events in Novosibirsk?

A: Yes, Novosibirsk is known for its vibrant cultural scene. The city hosts various festivals throughout the year, including the International Jazz Festival, Novosibirsk International Film Festival, and the Siberian Ice March Festival.

Q: Can I visit Novosibirsk without knowing Russian?

A: While knowing some basic Russian phrases can be helpful, many establishments in Novosibirsk, especially tourist areas, have English signage and staff who can communicate in English. However, learning a few essential Russian phrases can enhance your travel experience.

Novosibirsk's captivating history and vibrant culture make it a must-visit destination for any traveler. From its humble beginnings as a small settlement to its current status as Russia's third-largest city, Novosibirsk has a story worth exploring. If you're a sports enthusiast, don't miss the opportunity to learn more about the city's beloved football club , FC Sibir Novosibirsk. With its rich heritage and passionate fan base, the club has become an integral part of Novosibirsk's identity.

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