Sailfish 25 — Information, Review, Specs

Angus Primrose·1978·~800 hulls·Maxim Marine
Sailfish 25 drawingBuilder drawing
Hull type
Monohull · lifting
Rig
Fractional Sloop
LOA
25.42' · 7.75 m
Displ.
5,000 lbs · 2,268 kg
First year
1978

The Sailfish 25 is a robust, Britishbuilt pocket cruiser that emerged in the late 1970s as a sophisticated alternative to the era’s more common bilgekeelers. Designed by the esteemed Angus Primrose—the architect behind the legendary Westerly Centaur—and manufactured by Maxim Marine Ltd. in Southampton, the Sailfish 25 was intended to bridge the gap between trailerable daysailers and serious coastal cruisers. It represents a period of maritime engineering focused on maximizing internal volume and versatility for the tidal estuaries of Northern Europe. While it shared a name with its much more prolific smaller sibling, the Sailfish 18, the 25foot variant was a far more substantial vessel, offering genuine standing headroom and the seakeeping abilities required for crosschannel passages.

Measurements

Dimensions 01

LOA
25.42 ft
LWL
20 ft
Beam
9.33 ft
Draft
5 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Fiberglass
Hull type
Monohull
Keel type
Lifting
Rudder
1× —
Ballast
-
Displacement
5000 lbs
Water
30 gal
Fuel
14 gal

Rig & sails 03

Rig type
Fractional Sloop
P · main luff
-
E · main foot
-
I · fore ht.
-
J · fore base
-
Forestay (est)
-
Sail area
-

Calculations 04

SA/D ratio
Ballast/Disp.
D/L ratio
279.02
Comfort ratio
18.24
Capsize screening
2.18
Hull speed
5.99 kn

Sailing Performance & Handling

The defining characteristic of the Sailfish 25’s performance is its hydraulic lifting keel, a feature that distinguishes it from the fixed-keel boats of the same size. With the 1,620-pound cast iron aerofoil keel fully extended to its 5-foot depth, the boat displays impressive stiffness and a high ballast-to-displacement ratio (approximately 32%), allowing it to stand up well to its 371 square feet of sail area. Its fractional sloop rig provides a versatile sail plan that is easily managed from the cockpit, a design choice praised in technical archives at Yachtsnet.

Under sail, the boat tracks surprisingly well for its length, benefiting from the underwater profile of its Angus Primrose-designed hull. However, with a Displacement-to-Length (D/L) ratio of approximately 279, it is a moderate-to-heavy cruiser that prioritizes stability over light-air speed. Owners frequently note that the boat feels "bigger" than its 25 feet, exhibiting a predictable motion in choppy coastal waters. The lifting keel mechanism also permits a minimum draft of just 1' 1", making it an ideal choice for navigating shallow creeks or utilizing drying moorings where the boat can sit level on its hull.

Interior Comfort & Variations

For a vessel of its vintage and size, the Sailfish 25 offers exceptional interior volume. One of its most touted features is the 6-foot standing headroom in the main saloon, a rarity for 25-footers built in the 1970s. The layout typically accommodates five berths across two cabins: a V-berth in the forepeak that converts to a double, a dinette in the saloon that drops to form another double, and a single quarter berth located to port.

The interior construction utilized extensive GRP (glass-reinforced plastic) internal moldings, which provided structural rigidity and a clean, easy-to-maintain finish. The galley is generally located to port, featuring a gimballed stove and sink, while a dedicated heads compartment with a marine toilet and washbasin is situated forward of the saloon. Maxim Marine produced several variants based on this hull, including a rare twin-keel (bilge keel) version, though the hydraulic lifting keel remains the most sought-after configuration for its superior sailing performance. The Sailfish 25’s smaller siblings, the Sailfish 18 and Sailfish 19, utilized similar aesthetic lines but lacked the 25's enclosed head and full-height galley.

The Sailfish 25 occupies a somber but significant place in maritime history due to the "Ouzo" incident. The Ouzo, a Sailfish 25, was tragically lost off the Isle of Wight in 2006. The subsequent investigation by the Marine Accident Investigation Branch (MAIB) provided extensive technical documentation regarding the boat's design and construction. While the tragedy was not attributed to design flaws, the resulting report remains one of the most comprehensive technical lookups for the model’s structural integrity and buoyancy characteristics.

Known Issues & Buyer’s Checklist

Prospective buyers should focus their inspections on the unique mechanical systems of the Sailfish 25, particularly those that differ from standard fixed-keel yachts.

  • Keel Hydraulics: The hydraulic pump (either manual or electric) and the hydraulic ram responsible for lifting the 1,600-pound keel are the most critical components. Seals can perish over time, and a slow-dropping keel usually indicates a leak in the system or a faulty valve.
  • Pulleys and Cables: The keel is often supported by a wire cable running through a series of pulleys. In the Sailfish Association technical forums, owners have documented cases of these pulleys seizing or the cables fraying if not greased regularly. A snapped cable can result in the keel being permanently stuck in the "down" position.
  • Keel Pins and Rubbers: The keel is stabilized within its housing by rubber spacers and a pivot pin. If the boat has been used frequently in silty or sandy waters, these spacers can wear down, leading to a noticeable "clunk" as the keel moves within the trunk while sailing.
  • Engine Parts: Most original units were fitted with the Hydromarine DM12, a marinized twin-cylinder Kubota engine. While the base engine is reliable, specific Hydromarine-only parts (like the heat exchanger or exhaust manifold) are increasingly difficult to source, often requiring custom fabrication.

Community & Resources

The primary hub for owners is the Sailfish Association, a dedicated class association that supports the 18, 19, 25, and 565 models. They provide technical manuals, spare part leads, and a collective knowledge base that is essential for maintaining these aging cruisers.

The Verdict

The Sailfish 25 remains a highly capable "pocket" cruiser for sailors who need a shallow-draft vessel without sacrificing the comforts of a larger yacht.

Pros

  • Exceptional 6-foot headroom in a compact 25-foot frame.
  • Lifting keel offers a versatile 1' 1" to 5' 0" draft range.
  • Designed by Angus Primrose, ensuring solid sea-keeping for coastal work.
  • High ballast ratio provides a stable and safe sailing platform.

Cons

  • Complex hydraulic keel system requires diligent maintenance.
  • Limited production numbers (estimated under 30 units) make parts and advice harder to find than for Westerly or Hunter models.
  • Original Hydromarine engines are nearing the end of their service life and parts are scarce.

Similar sailboats

12 comparable designs · similar LOA, displacement & rig