Sail area / displacement
How much sail the boat carries for its weight — its power in light air.
- 71.7· Racing
How it is worked out
sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔
mainsail + jib, added up
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ClubSwan 125 — Nautor Swan
Design
- Designer
- Juan Kouyoumdjian
- Naval architect
- Juan Kouyoumdjian
- Interior designer
- Adriana Monk (MONK DESIGN)
Summary
Sailing MonohullSail
- Length overall
- 139.8 ft
- Beam
- 28.7 ft
- Draft
- 24.3 ft
- Air draft
- —
- Displacement
- 130,734 lb
* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.
Sailing Ratios
Classic yacht-design ratios worked out from the builder's published figures, each shown against the bands designers read it by.
Displacement / length
How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.
- 34· Ultralight
How it is worked out
displacement (long tons) ÷ (0.01 × waterline length in ft)³
Ballast ratio
The share of the weight carried in the keel — a rough guide to stiffness, though how deep that weight sits matters as much.
- 39· Moderate
How it is worked out
ballast ÷ displacement × 100
Comfort ratio
Ted Brewer's measure of how gently a boat moves in a seaway. Higher means a slower, easier motion.
- 18.2· Light
How it is worked out
displacement (lb) ÷ (0.65 × (0.7 × LWL + 0.3 × LOA) × beam^1.333), lengths in ft
Capsize screening
A guide from the inquiry after the 1979 Fastnet race: below 2 was taken as suited to ocean passages. It ignores hull shape and where the ballast sits.
- 2.26· 2 and above
How it is worked out
beam (ft) ÷ (displacement as ft³ of seawater)^⅓
Hull speed
Roughly the speed a displacement hull reaches before it has to climb its own bow wave.
- 14.7 kn
How it is worked out
1.34 × √(waterline length in ft), in knots
Most builders publish a light displacement. The ratios were defined on a loaded boat, so every boat here reads a little lighter than a surveyor's figure would — all alike, which keeps them comparable.
Tanks
What the builder publishes about how fast, how strong and how much the boat carries.
Fuel and water on one scale: a tank twice the height holds twice as much.
- Fuel264 galWater349 gal
A figure marked with a quote mark was read from the builder's page. Open it for the exact line, the page and the date.
Dimensions
- LOA
- 139.8 ft (42.62 m)
- Hull length
- —
- LWL
- 120.1 ft (36.6 m)
- Beam
- 28.7 ft (8.75 m)
- Draft (min)
- 24.3 ft (7.4 m)
- Draft (max)
- —
- Air draft
- —
- Displacement
- 130,734 lb (59,300 kg)
- Ballast
- 51,213 lb (23,230 kg)
- Cabins
- —
- Heads
- —
- Berths
- —
Sail Plan
- Main sail
- 7,093 ft² (659 m²)
- Jib
- 4,445 ft² (413 m²)
- Genoa
- —
- Sail area
- —
- Downwind sail area
- 21,108 ft² (1,961 m²)
- Rig type
- —
Engine and Tanks
- Engine
- 500 hp (Marine Diesel Sweden)
- Engine count
- 1
- Engine manufacturer
- Marine Diesel Sweden
- Propulsion type
- —
- Fuel capacity
- 264 gal (1,000 L)
- Fresh water capacity
- 349 gal (1,320 L)
- Black water capacity
- —
Construction
- Mast material
- —
- Hull material
- —
- Deck material
- —
- Keel type
- canting keel
- Rudder type
- —
- Steering wheels
- —
Builder's Own Figures
- Ballast tanks mid
- 8000 l
- Generator
- Fischer Panda 10000i 8kW
- P
- 51.700 m
- Main Engine power
- 373 kW @ 3600 rpm
- Starting battery
- 12V 25Ah
- STL
- 21.760 m
- J
- 16.50 m
- Electronic battery
- 24V 180Ah
- Black / Grey water
- 215 l
- Hot water
- 60 l
- E
- 18.350 m
- IM
- 53.30 m
- Service battery
- 24V 540Ah
- Rem. Fuel storage
- 2000 l
- Ballast tanks aft
- 7000 l
- Fuel day tank
- 200 l
Figures read fromthe builder's page
About Nautor Swan
Premium production
Finnish builder of luxury sailing yachts, founded in 1966 in Pietarsaari and known worldwide as Nautor Swan.
Oy Nautor AB was founded in 1966 by Pekka Koskenkylä at Pietarsaari, Finland, on centuries of Finnish boatbuilding and a wish to build high-performance sailing yachts of high quality. The first was the Swan 36, whose glass-reinforced hull came with a number of other innovations: it matched the traditional wooden yacht for performance and safety while steering more steadily, weighing less and offering more room below. Sparkman & Stephens drew roughly the first thousand Swans, the Swan 38 and Swan 47 among them, and the larger, seagoing Swan 55 and Swan 65 followed -- one of them, Sayula II, winning the first Whitbread Round the World Race in 1973-74. Ron Holland designed five yachts between 1978 and 1981, including the Swan 37, 39 and 42, and Germán Frers became the principal designer through the 1980s, later opening the one-design racing division with the Swan 45 in 2001 and the ClubSwan 42 in 2005. More than 2,350 yachts between 28 and 131 feet have been built in six decades. Everything is made at Pietarsaari, where engineering sits beside production, and the range now runs across six lines: Swan, Swan Maxi, ClubSwan, Swan Alloy, SwanScape and the motor yacht division Swan Shadow.
Visit brand pageThe Nautor Swan Range
Every model Nautor Swan publishes, by length — where this one sits in the range.
- ClubSwan 125· this modelDiscontinued139.8 ft
- Swan 128127.9 ft
- Swan 120Discontinued124.5 ft
- Swan 108117 ft
- Swan 98101.9 ft
- Swan 8892.7 ft
- Swan 8083.8 ft
- ClubSwan 80Discontinued81 ft
- Swan 7377.7 ft