Oyster 56 Sailboat Review, Specs, and Listings

Rob Humphreys·1996·Oyster Marine
Oyster 56 drawingBuilder drawing
Hull Type
Monohull · fin
Rig
Cutter
LOA
57.33' · 17.47 m
Disp.
57,320 lbs · 26,000 kg
First year
1996

The Oyster 56 stands as the most successful model Oyster Marine ever produced, with seventyfive hulls launched between 1998 and 2010 under Rob Humphreys' design leadership. Conceived as a vessel large enough for rapid ocean cruising yet small and agile enough for a couple to handle, she blends bluewater capability with liveaboard comfort across a 57'4" hull carrying 26,500 kg of displacement.

Measurements

Dimensions 01

Length Overall
57.33 ft
Length on deck
56 ft
Waterline Length
47.5 ft
Beam
16.17 ft
Draft
7.83 ft
Maximum Headroom
Air Draft
74.41 ft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Skeg-Hung
Ballast
17,460 lbs (Lead)
Displacement
57,320 lbs
Water Capacity
170 gal
Fuel Capacity
190 gal

Rig & sails 03

Rigging Type
Cutter
Mainsail luff
Mainsail foot
Foretriangle height
Foretriangle base
Forestay Length (estimated)
Sail Area
1,418 sqft

Calculations 04

Sail Area to Displacement Ratio
15.26
Ballast to Displacement Ratio
30.46
Displacement to Length Ratio
238.77
Comfort Ratio
43.15
Capsize Screening Ratio
1.68
Hull Speed
9.24 kn

Design and Construction

Humphreys shaped the hull form of the 56 with a softly V-ed forefoot and generous rocker through the forward profile to suppress pounding in a seaway. The rudder carries an 11-degree rake with an extended fin fairing ahead of the skeg, a geometry that aids tracking. Two keel options were offered: a shoal-draft keel drawing 6 feet with a bulbish tip, and a deeper keel drawing 7 feet 10 inches with a flared, flattened tip and no bulb geometry. The hull is solid GRP, while the deck is balsa-cored to keep topside weight in check. Distinctively, the 56 was the first yacht with an ergonomically designed cockpit, developed with Loughborough University's Ergonomics department — a center-cockpit layout that also frees volume for a walk-in engine room.

Rig and Handling

The cutter rig is modest in area, with a sail plan of 1,418 sq ft and an SA/D ratio of 15.28 on the foretriangle, carried on triple spreaders with aft lowers and a babystay intersecting the mast at 8 degrees. Under power, a 110-horsepower Yanmar diesel turns a 3-bladed Max prop and should push the 56 along at about 9.3 knots. On the racecourse she proved herself a capable cruiser: class wins in the ARC and a Cruising Class 1 victory at Antigua Sailing Week, where she beat more serious racing competitors. The D/L ratio of 237 and L/B of 3.53 place her firmly in the loaded cruising hull category rather than the lightweight racer.

Accommodations

The raised-saloon configuration that defines the Oyster line gives the 56 a bright main living space with a big curvy dinette; the starboard settee is too short to serve as a berth. A huge galley with abundant counter space and a big freezer compartment anchors the working area, while the aft stateroom offers a curved settee and centerline vanity. Four cabins accommodate eight guests in comfort and style for living aboard — a layout that fulfills the design brief of crew comfort without sacrificing the couple-handled mandate.

The Verdict

The Oyster 56 is a thoughtfully engineered blue-water cruiser that punches above her comfort-oriented image on the racecourse. Humphreys' hull and the ergonomic cockpit give her a rare blend of shorthanded agility and ocean-going stability, while the raised saloon and walk-in engine room address liveaboard and service needs. The dual-keel option broadens her cruising range, though the modest rig demands patience in light air.

Pros

  • Proven offshore performer with ARC and Antigua Sailing Week class wins
  • Ergonomic cockpit developed with Loughborough University; walk-in engine room
  • Choice of shoal or deep keel; solid GRP hull with balsa-cored deck
  • Spacious four-cabin, eight-guest layout with large galley

Cons

  • Modest SA/D ratio of 15.28 limits light-air performance
  • Starboard settee too short for a berth
  • Deep keel draws 7'10", restricting some anchorages

Similar sailboats

12 comparable designs · similar LOA, displacement & rig