Mosquito 104 (Fly 34)
Description
The MOSQUITO 104 (also known as the Mosquito 104 or sometimes marketed as the Fly 34 Mosquito 104) is a Danish-designed performance-oriented cruising sailboat from the mid-1980s. It was penned by the renowned Danish naval architects Paul Elvstrøm & Kjærulff (Elvstrøm/Kjaerulff bureau), famous for Olympic sailing and innovative designs. Built primarily by Farsoe Glasfiber (Denmark) starting around 1985, with some earlier examples (e.g., 1980 hulls under Fly 34 branding), production was limited—estimates range from about 30 to fewer than 100 hulls total, making it a rare and cult-favorite classic in European waters. This boat stands out for its slender, lightweight hull (narrow beam for its era), deep fin keel, fractional sloop rig, and emphasis on speed and handling—often described as a "slender Danish classic" that's sporty, fast downwind, and rewarding to sail, especially in moderate-to-fresh conditions. It's more performance-leaning than many traditional cruisers.
Construction Details
| Designer | Elvstrom and Kjaerluff |
|---|---|
| Builder | Farsoe Glasfiber (Denmark) |
| Length | 34.120 ft |
| LOA | 34.120 ft |
| LWL | 26.570 ft |
| Beam | 8.200 ft |
| Displacement | 8598 lb |
| Ballast | 4000 lb |
| Max Draft | 6.580 ft |
| Year Built | 1980 |
The standard boat dimensions
| i | 12.36 ft |
|---|---|
| j | 3.60 ft |
| p | 12.05 ft |
| e | 3.71 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 12.36 ft | 3.60 ft | 12.05 ft | 3.71 ft | - | - | - | - |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.
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