Masthead Sloop · Fin With Rudder On Skeg · 1979–1981
An Angus Primrose-designed masthead sloop with a high sail area-to-displacement ratio for spirited performance
Designed by Angus Primrose, built by Nao Glass.
LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin With Rudder On Skeg
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
LivelyComfort 20Sea-kindly
CoastalCapsize 2.16Bluewater
LightD/L 246Heavy
EasygoingSA/D 23.4Powered-up
TenderBallast 40%Stiff
Powered-up and quick to accelerate — this one likes to sail.
The record
Full specifications
The complete reference set — tap any figure to switch between metric and imperial.
Dimensions
Weights
Ballast / displacement
40.4%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
23.4
Displacement / length
246.2
Comfort ratio
19.7
Capsize screening
2.16
Hull speed
6.5 kn
Pounds / inch immersion
893
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
1979–1981
Designer
Angus Primrose
Builder
Nao Glass, Puma Yachts (Nao-Glass)
Boats like this, on the water
Nobody has filmed this one — but these are close.
Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.
Watkins Yachts 278.23 mSame hull family0.7 m shorterA masthead sloop with a skeg-hung rudder, offered in rare pilot house and keel-centerboard configurations
Granada Yachts 319.39 mSame hull family0.5 m longerA masthead sloop with a spade rudder and nearly 46% ballast ratio, designed for stability in a 31-foot hull
Maxi Yachts 959.50 mSame hull family0.6 m longerA 9.5-metre masthead sloop produced for a decade, featuring a skeg-hung rudder for predictable coastal handling
Pearson Yachts 27 (Triton 27)8.23 mSame hull family0.7 m shorterA Doug Peterson-influenced masthead sloop built from US Yachts molds, offering a light-displacement cruiser profile
Hunter Marine 319.55 mSame hull family0.6 m longerA Cortland Steck design featuring a B&R rig and a fin keel, built for coastal cruising between 1983 and 1987