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Seal 26
Designer: Angus Primrose  ·  Builder: John Baker (Uk)  ·  First built: 1978
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About the Seal 26

A compact and capable small cruiser, the Seal 26 has earned a modest but loyal following among sailors who appreciate a practical, no-frills approach to coastal sailing. Designed with accessibility in mind, this boat appeals to those stepping up from smaller dinghies or looking for an affordable entry point into keelboat ownership without sacrificing seaworthiness. While detailed specifications are limited, the Seal 26's proportions suggest a hull well-suited to day sailing and weekend coastal cruising, offering enough accommodation for a small crew to spend a night or two aboard in reasonable comfort. Its manageable size makes it an attractive choice for short-handed sailing, where ease of handling and predictable behavior in varied conditions are valued over outright performance. The Seal 26 is unlikely to turn heads on a racing circuit, but that was never its purpose. For sailors prioritizing reliability, simplicity, and the freedom to explore sheltered coastlines and estuaries without the complexity or cost of a larger vessel, it represents a sensible and rewarding choice worth considering during your search.

Core Dimensions
LOA (Length Overall) 26.33 ft / 8.03 m
LWL (Waterline Length) 23.83 ft / 7.26 m
Beam 9.25 ft / 2.82 m
Max Draft 4.50 ft / 1.37 m
Displacement 5,000.00 lb / 2,268 kg
Ballast 2,200.00 lb / 998 kg
Design & Construction
Hull Type Fin Keel
Rigging Type Fractional Sloop
Construction FG
Designer Angus Primrose
Builder John Baker (UK)
First Built 1978
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Known Issues & What to Watch For

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Performance Ratios
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
44.0
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
164.95
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 4.72 pounds/inch
Rig Dimensions
I (Foretriangle Height) 44.00
P (Mainsail Luff) 164.95
E (Mainsail Foot) 787.61 pounds/inch
How It Compares

vs. Marieholm 26, Sonata 26, Trapper 300

This boat Similar boats
Dimensions
LOA
Seal 26 ★
26.3 ft
Marieholm 26
26.3 ft
Sonata 26
26.3 ft
Trapper 300
26.3 ft
LWL
Seal 26 ★
23.8 ft
Marieholm 26
20.2 ft
Sonata 26
19.8 ft
Trapper 300
20.6 ft
Beam
Seal 26 ★
9.3 ft
Marieholm 26
7.2 ft
Sonata 26
8.2 ft
Trapper 300
8.0 ft
Displacement
Seal 26 ★
5 lbs
Marieholm 26
5 lbs
Sonata 26
2 lbs
Trapper 300
4 lbs
Ballast
Seal 26 ★
2 lbs
Marieholm 26
2 lbs
Sonata 26
500 lbs
Trapper 300
1 lbs
Sail Area
Seal 26 ★
Marieholm 26
291 sq ft
Sonata 26
277 sq ft
Trapper 300
Performance
SA / Displacement (higher = more powerful)
Seal 26 ★
Marieholm 26
15.0
Sonata 26
22.3
Trapper 300
Ballast / Disp (higher = stiffer)
Seal 26 ★
44.0 %
Marieholm 26
Sonata 26
Trapper 300
43.1 %
Comfort Ratio (higher = more comfortable offshore)
Seal 26 ★
Marieholm 26
27.8
Sonata 26
12.2
Trapper 300
Capsize Screening (lower = safer)
Seal 26 ★
Marieholm 26
1.64
Sonata 26
2.32
Trapper 300
Displacement / Length (lower = lighter)
Seal 26 ★
164
Marieholm 26
Sonata 26
Trapper 300
225
Hull Speed
Seal 26 ★
Marieholm 26
6.0 kts
Sonata 26
6.0 kts
Trapper 300
Speed Number (higher = faster)
Seal 26 ★
Marieholm 26
1.6
Sonata 26
3.8
Trapper 300
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