Beneteau First 25 SK Information, Review, Specs

Beneteau First 25 SK Drawing
Make
Beneteau
Model
First 25 SK
Builder
Beneteau
Designer
Jean-Marie Finot
Number Built
Production Year(s)
1979 - 1984

The Beneteau First 25 SK (Swing Keel) represents one of the most enduring success stories in the "pocket cruiser" category, bridging the gap between a spirited daysailer and a capable coastal cruiser. Originally launched in 1979 as a Jean-Marie Finot design, the model underwent a significant evolution in 2004 under Finot-Conq, eventually manifesting as the First 25.7 and later the First 25S. This modern iteration utilized a hull form heavily influenced by Mini Transat racing designs, featuring a broad transom and a nearly plumb bow to maximize the sailing waterline. The "SK" or lifting-keel configuration is the most sought-after variant, as it allows the vessel to navigate exceptionally shallow waters and dry out on sandy bottoms while providing a deep, stable 6-foot draft when the keel is fully deployed.

Sailing Performance & Handling

The First 25 SK is defined by its versatility. With a Sail Area-to-Displacement ratio of approximately 20.3 (climbing closer to 24 with the optional square-top mainsail), the boat is notably "slippery" in light air. According to editorial tests by Sail Magazine, the modern version’s unstayed rig—which lacks a backstay—allows for a significant roach in the mainsail, providing a powerful driving force even in flukes.

Handling is characterized by the twin-rudder system found on the 25.7 and 25S variants. These rudders ensure that at least one blade remains deeply immersed even when the boat is heavily heeled, preventing the "rounding up" common in beamy, single-rudder boats. The swing keel, operated via a manual worm-gear or hydraulic system depending on the year, provides a variable draft from 2' 9" (0.85m) to 6' 1" (1.85m). While the boat tracks well upwind with the keel down, it truly shines on a reach or downwind, where the broad, flat aftersections and light displacement (approximately 4,740 lbs) allow it to surf in moderate breezes.

Interior Comfort & Variations

Despite its 25-foot length, the interior of the First 25 SK is a masterclass in space optimization. The layout generally includes a private forward V-berth, a central salon with two linear settees that double as berths, and a surprisingly functional galley for a boat of this size. The Beneteau factory brochures highlight the 2004 redesign’s shift toward lighter "pear tone" or "light oak" woodwork, which helps alleviate the "tunnel" feeling often associated with narrow pocket cruisers.

Several variants exist on this same hull. The First 260 Spirit was the direct predecessor, sharing the same basic hull lines but with different interior finishes. The First 25.7 introduced the "S" (Sport) package, which often featured higher-spec hardware and the distinctive square-top mainsail. A fixed-keel version was also produced, drawing 4' 9", but it lacks the beachability and trailer-friendliness that define the SK model. Headroom is a noted constraint; while comfortable for those under 6 feet, taller sailors will find it necessary to stoop in the forward sections of the cabin.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the First 25 SK with a specific technical focus on the lifting mechanism and hull integrity:

  • Swing Keel Pivot and Bushings: The most critical inspection point is the keel pivot bolt and the condition of the lifting cable. Owners have noted that if the sacrificial anodes are neglected, the cast iron keel can swell or corrode, making it difficult to raise or lower.
  • Deck Core Integrity: Like many production boats of this era, the sandwich construction deck (balsa or foam core) can be prone to "soft spots" if hardware has been poorly bedded. Particular attention should be paid to the areas around the mast step and the chainplates.
  • Rudder Alignment: On twin-rudder models, the linkage between the tiller and the rudders should be checked for play. Excessive wear in the bushings can lead to a vibrating helm at high speeds.
  • Inboard Engine Maintenance: While many 25-footers use outboards, the First 25 SK often features a 14hp Yanmar or Nanni diesel. These are reliable but can suffer from "elbow" corrosion (exhaust mixing elbow) and require a thorough inspection of the sail-drive seal if so equipped.

Community & Resources

The boat is supported by a robust network of owners, primarily organized through the Beneteau Owners Association. This group provides a wealth of technical documentation, including rigging diagrams and keel maintenance guides that are essential for long-term ownership of the swing-keel system.

The Verdict

The Beneteau First 25 SK is an ideal choice for the sailor who wants a performance-oriented boat that doesn't sacrifice the ability to explore tidal estuaries or participate in regional club racing.

Pros:

  • Shallow Draft: The 2' 9" minimum draft opens up cruising grounds inaccessible to most keelboats.
  • Ease of Handling: Twin rudders and a simple, backstay-less rig make it a favorite for solo sailors.
  • Modern Aesthetics: The Finot-Conq hull lines still look contemporary and perform well against newer designs.

Cons:

  • Headroom: The interior is compact, particularly in the V-berth and head compartments.
  • Maintenance: The swing-keel mechanism requires more frequent "on-the-hard" attention than a fixed keel.
  • Fuel Capacity: The small 8-gallon fuel tank limits extended motoring sessions.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Wing
Rudder
1x —
Ballast
1543 lbs (Iron)
Displacement
4850 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
24.61 ft
Waterline Length (LWL)
21.82 ft
Beam
9.19 ft
Draft
5.58 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
26.31 ft
E (Main Foot)
8.86 ft
I (Foretriangle Height)
31.3 ft
J (Foretriangle Base)
10.56 ft
Forestay Length (est)
33.03 ft
Sail Area
282 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
15.75
Ballast / Displacement Ratio
31.81
Displacement / Length Ratio (D/L) Ratio
208.42
Comfort Ratio
17.24
Capsize Screening Formula
2.17
Hull Speed
6.26 kn