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Whitby 25 Continental Folkboat
Designer: T. Sunden  ·  Builder: Whitby Boat Works Ltd.  ·  First built: 1961
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About the Whitby 25 Continental Folkboat

Rooted in the celebrated Folkboat tradition, the Whitby 25 Continental Folkboat carries on a legacy of simple, capable sailing that has earned devoted followings on both sides of the Atlantic. Designed for sailors who appreciate classic lines and honest performance, this compact cruiser is well suited to coastal and near-offshore sailing, offering a reassuring blend of stability and sea-kindliness that the Folkboat lineage is known for. The Continental Folkboat design philosophy prioritizes a sleek, low-maintenance hull with a deep, well-defined keel that promotes confident tracking and comfortable handling in a range of conditions. Her narrow beam and traditional proportions give her an elegant, purposeful appearance that stands apart from modern production boats, appealing strongly to those drawn to timeless design. With limited specifications readily available, much of what defines this boat can be inferred from her heritage. Folkboat-derived designs are generally celebrated for their responsiveness under sail, manageable rigs, and solid construction. For a prospective buyer, the Whitby 25 Continental Folkboat represents an entry into a respected sailing tradition — a boat that rewards attentive seamanship and suits weekend coastal cruising with character and charm.

Core Dimensions
LOA (Length Overall) 25.25 ft / 7.70 m
LWL (Waterline Length) 19.83 ft / 6.04 m
Beam 7.25 ft / 2.21 m
Max Draft 3.83 ft / 1.17 m
Displacement 5,500.00 lb / 2,495 kg
Sail Area (Reported) 297.00 ft² / 27.59 m²
Design & Construction
Hull Type Long keel w/trans. hung rudder
Rigging Type Masthead Sloop
Construction FG
Designer T. Sunden
Builder Whitby Boat Works Ltd.
First Built 1961
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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
 15.3
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
 28.29
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
 1.65
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 5.97
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
 1.51
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. 513.7
Rig Dimensions
I (Foretriangle Height) 30.8
J (Foretriangle Base) 9.0
P (Mainsail Luff) 26.8
E (Mainsail Foot) 11.8
SA Fore 138.6
SA Main 158.12
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