The Islander 55 represents the zenith of the Wayfarer Yacht Corporation's ambition during the 1970s. Designed by the acclaimed naval architect Bruce King, this flagship vessel was a radical departure from the smaller, coastal-oriented cruisers that established the company’s reputation. While Islander Yachts was built on the success of Joseph McGlasson’s 24-foot designs, the 55-foot model was aimed squarely at the burgeoning market for luxury blue-water cruisers. The boat is characterized by its powerful ketch rig, a traditional clipper-style bow (on some variants), and a heavy-displacement hull that prioritized stability and momentum over light-air agility. Because production was extremely limited—estimates suggest fewer than 15 hulls were completed—the Islander 55 is often regarded as a semi-custom rarity in the secondary market. Its legacy is further complicated by the company's financial transitions; after Islander’s parent company, Radlon Inc., faced difficulties, the molds for the 55 were eventually acquired by Tradewinds Marine, which produced a small number of vessels known as the Tradewinds 55.
Islander 55 Information, Review, Specs

- Make
- Islander
- Model
- 55
- Builder
- Islander / Tradewind Yachts
- Designer
- Bruce King
- Number Built
- Production Year(s)
- 1968 - ??
Sailing Performance & Handling
The sailing characteristics of the Islander 55 are defined by its significant displacement and Bruce King’s signature approach to hull form. With a traditional long keel and a cutaway forefoot, the vessel exhibits exceptional directional stability, often described by owners as "tracking on rails" even in confused seas. This sea-kindliness comes at the cost of a wide turning radius, making tight maneuvers under power in crowded marinas a challenge that requires experienced handling.
The ketch rig was the standard configuration, chosen to break down the large sail area into manageable portions for a short-handed couple. This setup allows for a versatile "jib and jigger" configuration, which keeps the boat balanced and upright during heavy weather. While the sail area-to-displacement ratio is moderate, the boat requires a stiff breeze—typically 12 knots or more—to truly wake up. Once it reaches hull speed, the Islander 55 utilizes its 55-foot waterline to offer a fast, comfortable ride that minimizes the "hobby-horsing" motion common in lighter, shorter vessels. Technical insights into the brand's design evolution can be explored through the Islander 36 Association, which serves as the primary historical repository for the company's larger Bruce King designs.
Interior Comfort & Variations
Below decks, the Islander 55 was designed to compete with high-end yachts of the era, such as those from Hinckley or Gulfstar. The interior is characterized by an abundance of vertical-grain teak and a layout that emphasizes privacy for long-term liveaboards. Most hulls featured a center-cockpit configuration, which allowed for a palatial master aft cabin with a private head and often a small bathtub—a rare luxury for the time.
The main salon typically utilizes the vessel's generous beam to provide a wide-open social area, featuring a large U-shaped galley that is optimized for use at sea. Because many of these boats were finished with varying degrees of owner input or completed as "kit boats" through the Yachtcraft subsidiary, interior arrangements can vary significantly. Some versions feature a flush-deck aesthetic that maximizes headroom throughout the entire length of the boat, while others possess a more pronounced deckhouse. The sibling Tradewinds 55 models, built from the same molds, often feature slightly different portlight configurations and interior joinery standards, reflecting the shift in production from Costa Mesa to other facilities.
Known Issues & Buyer’s Checklist
Purchasing a vessel of this age and scale requires a rigorous survey, specifically targeting the construction methods of the 1970s.
- Deck Core Integrity: Like many Islander models of the era, the 55 used a balsa-cored deck. Buyers should use a moisture meter and percussion hammer to check for delamination around the chainplates, stanchion bases, and the base of the masts, as these are common points for water ingress.
- Fuel and Water Tanks: The original tanks were often constructed of iron or stainless steel and glassed into the hull structure. After five decades, corrosion is a significant risk. Replacing these tanks in an Islander 55 is a major undertaking that may require cutting out sections of the cabin sole.
- Chainplate Corrosion: Given the heavy loads of the ketch rig, the stainless steel chainplates must be inspected for anaerobic corrosion where they pass through the deck.
- Osmotic Blistering: While Islander hulls were generally robust, the 1970s layup process was susceptible to osmotic blistering. A haul-out for a bottom inspection is mandatory to determine if the hull requires a peel and epoxy barrier coat.
Community & Resources
Owners of the Islander 55 typically find a home within the broader Islander yachting community. The most prominent resource is the Islander 36 Association, which, despite its model-specific name, maintains the most comprehensive archive of technical drawings, builder history, and maintenance wikis for all California-built Islander yachts. While there is no dedicated "Islander 55 Club" due to the low production numbers, the Bruce King design lineage connects these owners with a wider network of sailors who appreciate the "Golden Age" of fiberglass boat building.
The Verdict
The Islander 55 is a "black swan" of the cruising world: a massive, stoutly built ocean-crosser that offers incredible value for those willing to manage its maintenance. It is not a boat for the casual weekend sailor, but for a voyager seeking a traditional, stable platform for circumnavigation, it remains a formidable contender.
Pros:
- Exceptional tracking and heavy-weather stability.
- Massive interior volume suitable for permanent liveaboard use.
- Classic Bruce King aesthetics that draw attention in any harbor.
- The ketch rig provides multiple "gears" for varied wind conditions.
Cons:
- High maintenance costs associated with its 55-foot length and twin-masted rig.
- Deep draft and large size limit access to shallower cruising grounds and smaller slips.
- Difficult to maneuver in tight quarters without a bow thruster.
- Limited availability makes finding parts or sistership advice a challenge.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Centerboard
- Rudder
- 1x —
- Ballast
- 6000 lbs (Lead)
- Displacement
- 38000 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 54.67 ft
- Waterline Length (LWL)
- 36 ft
- Beam
- 14 ft
- Draft
- 11.33 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 52.5 ft
- E (Main Foot)
- 21.5 ft
- I (Foretriangle Height)
- 59 ft
- J (Foretriangle Base)
- 21 ft
- Forestay Length (est)
- 62.63 ft
- Sail Area
- 1184 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 16.76
- Ballast / Displacement Ratio
- 15.79
- Displacement / Length Ratio (D/L) Ratio
- 363.6
- Comfort Ratio
- 42.02
- Capsize Screening Formula
- 1.67
- Hull Speed
- 8.04 kn