Review of X-99

Basic specs..

The hull is made of hand laid fibreglass while the deck is made of fibreglass. Generally, a hull made of hand laid fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all. The hull is a double hull which improves the indoor climate. Especially when the water is colder than the air in the cabin, then the double hull insulates against cold water and reduce the condense water in the cabin. The deck is a double deck which improves the indoor climate.

The interior is like many other boats made of mahogany. Mahogany belongs to the hardwood species, known for being water-repellent and resistant to decay. It has an attractive wood grain and holds wood polish and varnish well. The boat is equipped with 3 cabins, 6 berths, a galley, 50.0 liter fresh water capacity and toilet facility. Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.

The X-99 is equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a gennaker or a spinnaker for optimal speed.

The X-99 has been built with different keel alternatives.

Unknown keel type

X-99 can enter most marinas as the draft is just about 1.75 - 1.85 meter (5.74 - 6.04 ft) dependent on the load. See immersion rate below.

The X-99 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The keel is made of iron. Many people prefer lead keel in favour of iron. The main argument is that lead is much heavier than iron and a lead keel can therefore be made smaller which again result in less wet surface, i.e. less drag. In fact iron is quite heavy, just 30% less heavy than lead, so the advantage of a lead keel is often overstated. As the surface of a fin type keel is just a fraction of the total wet surface, the difference between an iron keel and a lead keel can in reality be ignored for cruising yachts.

The boat can only enter major marinas as the draft is about 1.82 - 1.92 meter (5.97 - 6.27 ft) dependent on the load. See immersion rate below.

The boat may be equipped with an inboard Bukh DV10 diesel engine at 10 hp (7 kW). The speed is 6.7 knots.

The transmission is a saildrive.

The fuel tank, which is made of stainless steel, has a capacity of 30.0 liters (7 US gallons, 6 imperial gallons).

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Capsize Screening Formula (CSF)?

The capsize screening value for X-99 is 2.11, indicating that this boat would not be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 7.1 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for X-99 is about 170 kg/cm, alternatively 953 lbs/inch. Meaning: if you load 170 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 953 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is a Ballast Ratio?

What is Displacement Length Ratio?

What is SA/D (Sail Area Displacement ratio)?

What is Relative Speed Performance?

Maintenance

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 30m 2 (322 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

UsageLengthDiameter
Mainsail halyard 32.5 m(106.8 feet)10 mm(3/8 inch)
Jib/genoa halyard32.5 m(106.8 feet)10 mm(3/8 inch)
Spinnaker halyard32.5 m(106.8 feet)10 mm(3/8 inch)
Jib sheet 10.0 m(32.8 feet)12 mm(1/2 inch)
Genoa sheet10.0 m(32.8 feet)12 mm(1/2 inch)
Mainsheet 25.0 m(81.9 feet)12 mm(1/2 inch)
Spinnaker sheet22.0 m(72.1 feet)12 mm(1/2 inch)
Cunningham4.5 m(14.8 feet)10 mm(3/8 inch)
Kickingstrap9.0 m(29.5 feet)10 mm(3/8 inch)
Clew-outhaul9.0 m(29.5 feet)10 mm(3/8 inch)

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

We are always looking for new photos. If you can contribute with photos for X-99 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us . Criticism helps us to improve.

Sailboat specifications

  • Last update: 16th March 2020

X-99's main features

X-99's main dimensions, x-99's rig and sails, x-99's performances, x-99's auxiliary engine, x-99's accommodations and layout, x-99's saloon, x-99's fore cabin, x-99's aft cabin.

X-Yachts X-99  Picture extracted from the commercial documentation © X-Yachts

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COMMENTS

  1. X-99 Inspection

    X-99 Yacht Inspection by 6 year old yacht Surveyor. The X-99 was first launched in 1985. Over 620 yachts have sold world wide. She is lovely sports cruiser. ...

  2. X-99

    A boat with a BN of 1.6 or greater is a boat that will be reefed often in offshore cruising. Derek Harvey, "Multihulls for Cruising and Racing", International Marine, Camden, Maine, 1991, states that a BN of 1 is generally accepted as the dividing line between so-called slow and fast multihulls.

  3. Review of X-99

    X-99 can enter most marinas as the draft is just about 1.75 - 1.85 meter (5.74 - 6.04 ft) dependent on the load. See immersion rate below. Fin keel. The X-99 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel. The keel is made of iron.

  4. X-99

    The higher a boat's D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more. Formula. D/L = (D ÷ 2240) ÷ (0.01 x LWL)³ D: Displacement of the boat in pounds. LWL: Waterline length in feet

  5. X-99

    Daysailer, Segelyacht. X-Yachts X-99. CHF 39'000.-. Das knapp 10 Meter lange Boot zeichnet sich in erster Linie also durch seine Allround-Eigenschaften aus. Man kann mit einer X-99 richtig schnell Regatta segeln (muss dafür aber das Boot aus Gewichtsgründen ordentlich entrümpeln) und mit Familie auf längere (schnelle) Törns gehen.

  6. X-99

    The X-99 was designed by Niels Jeppesen and built by X-Yachts and first launched in 1985 with 605 built. Oak frame: Hull no 1 -to 259 and hull no 270, 263 and 267 Steel frame introduced 1990 Hull no 260 and onwards except 270, 263, 267 Alu. framed windows introduced 1991 (MK I) Hull no 288 and onwards except 290 and 310 Volvo engine introduced 1991 (MK I) Hull no 288 and onwards except 290 and ...

  7. X-Yacht, X-99 Why none in USA?

    X-yachts were never really marketed well in N.A. The first boats imported came to Canada. I know the dealer wanted to focus on the bigger models such as the 402 and 119, which is too bad as the 99 could have been very popular. In my mind the 99 was a breakthrough boat with good compromise between comfort and performance.

  8. X-99 (X-Yachts)

    Last update: 16th March 2020. The X-99 is a 32'7" (9.95m) racer-cruiser sailboat designed by Niels Jeppesen (Denmark). She was built between 1985 and 2004 by X-Yachts (Denmark) with 605 hulls completed.

  9. X-99

    Das Design der X-99 wurde vom Konstrukteur Niels Jeppesen entworfen. Die X-99 wird seit 1985 produziert. Insgesamt hat die dänische X-Yachts Werft über 600 Stück gebaut. Verbreitung findet die X-99 Klasse vor allem in den nordischen Ländern. Sie gilt als die grösste 10m Einheitsklasse in Europa. Die X-99 wird mit einer Crew von mindestens ...

  10. PDF X-99 single-handed

    yacht race, the X-99 has found a home in SOL's boathouse, both as single-hander (this polar), and as a full-crew racing yacht. See the link below for the single-handed's racing history on SOL. hoto: wikipedia.org. 1000 1100 1200 3 kn kn 9 kn kn — 12 kn — 15 kn — 20 kn — 25 kn — 30 kn — 40 kn — 50 1300 1400 1500 1600