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Sailboat Specifications

Mosquito 104

Fractional Sloop · Fin W/Spade Rudder

Designed by Elvström/Kjaerulff · Built by Farsoe Glasfiber (Den) · First built 1985

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LOA 34.12 ft  ·  Beam 8.20 ft  ·  Displacement 8,598.00 lb  ·  Sail Area 521.00 ft²  ·  Fractional Sloop  ·  Fin W/Spade Rudder
About the Mosquito 104 Sailboat

Danish sailing expertise shines through in this elegant 34-footer from the renowned Elvström/Kjaerulff design partnership. Built by Farsoe Glasfiber from 1985 through a limited production run of just 30 hulls, the Mosquito 104 represents a sophisticated approach to performance-oriented cruising. The boat's impressive sail area to displacement ratio of 19.93 reveals its spirited sailing character, while the substantial ballast-to-displacement ratio of over 56% provides excellent stability and confidence-inspiring sailing characteristics. The fractional sloop rig paired with a modern fin keel and spade rudder configuration delivers responsive handling and solid upwind performance. With a comfort ratio of 27.94, this design strikes an appealing balance between performance and livability, making it well-suited for coastal cruising and club racing. The relatively deep 6.56-foot draft reflects the designers' commitment to sailing performance over shallow-water accessibility. The low capsize screening value of 1.6 indicates good stability characteristics for offshore work. As a limited-production boat bearing the Elvström name – synonymous with Olympic sailing excellence – the Mosquito 104 appeals to sailors seeking a refined, performance-oriented cruiser with impeccable Danish pedigree and the exclusivity that comes with rare production numbers.

Dimensions & Specifications
LOA (Length Overall) 34.12 ft / 10.40 m
LWL (Waterline Length) 26.57 ft / 8.10 m
Beam 8.20 ft / 2.50 m
Max Draft 6.56 ft / 2.00 m
Displacement 8,598.00 lb / 3,900 kg
Ballast 4,850.00 lb / 2,200 kg
Ballast Type Iron
Sail Area (Reported) 521.00 ft² / 48.40 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Elvström/Kjaerulff
Builder Farsoe Glasfiber (DEN)
First Built 1985
Number Built 30
Related Sailboats J/34 · Olson 34 · Wasa 34 · Sweden Yachts 340 · Express 34
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Engine & Accommodations
Engine Make Volvo
Engine Model 2004
Engine Type Diesel
Frequently Asked Questions

What is the Mosquito 104's sail area to displacement ratio?

The Mosquito 104 has a Sail Area to Displacement ratio (SA/D) of 19.93. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Mosquito 104's comfort ratio?

The Mosquito 104 has a Ted Brewer Comfort Ratio of 27.94. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Mosquito 104 safe for offshore sailing?

The Mosquito 104 has a Capsize Screening Formula value of 1.6. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Mosquito 104?

The theoretical hull speed of the Mosquito 104 is 6.91 kn knots, calculated from its waterline length.

How much does a Mosquito 104 weigh?

The Mosquito 104 has a displacement of 8,598.00 lb and a length overall (LOA) of 34.12 ft.

Who designed the Mosquito 104?

The Mosquito 104 was designed by Elvström/Kjaerulff, first built in 1985.