West Wight Potter 15 Mk II Information, Review, Specs

West Wight Potter 15 Mk II Drawing
Make
West
Model
Wight Potter 15 Mk II
Builder
HMS Marine Inc.
Designer
Stanley T. Smith/H. Stewart
Number Built
Production Year(s)
1982 - ??

The West Wight Potter 15 Mk II is perhaps the most recognizable "pocket cruiser" in the world, a micro-yacht that has earned a cult-like following for providing a genuine cruising experience in a package that can be towed by a standard passenger car. Since its transition to fiberglass construction under the direction of Herb Stewart and subsequently International Marine, the Mk II has become the definitive iteration of Stanley Smith’s original 1960 design. Unlike many 15-footers that are purely open-cockpit daysailers, the Potter 15 features a fully enclosed cabin and a distinctive "lapstrake" fiberglass hull that mimics traditional wooden construction while providing modern durability and significant reserve buoyancy.

The Mk II specifically improved upon the original fiberglass "Mk I" by refining the deck mold and interior layout to maximize the limited volume of a 15-foot hull. While the boat is often compared to its larger sibling, the West Wight Potter 19, the 15 Mk II remains the choice for solo sailors or couples who prioritize ease of launching and the ability to store the vessel in a standard garage.

Sailing Performance & Handling

The West Wight Potter 15 Mk II is designed for stability and safety rather than raw speed. Its hull features a hard chine and a flat bottom section, which provides exceptional initial stability for a boat of its size. This "boxy" hull shape allows the boat to remain relatively level even when a crew member moves about the cockpit or side decks. With a displacement of approximately 475 pounds and a 100-pound galvanized steel drop-keel, the boat has a high ballast-to-displacement ratio for a trailer-sailer, contributing to its reputation as a "stiff" boat that can handle significantly more wind than a typical racing dinghy.

In terms of handling, the Potter 15 is known for its "uncapsizable" nature—a marketing claim from International Marine that, while not a physical impossibility, reflects the boat’s high resistance to knockdown due to its sealed mast and flotation compartments. According to reviews in Small Craft Advisor, the boat tracks well due to its long, shallow keel section and the vertical lift of the centerboard. However, because of its light weight and high freeboard, it can be prone to "leeway" (drifting sideways) in high winds if the centerboard is not fully deployed. The sail plan is typically a simple Bermudan rig, though early versions and custom retrofits sometimes utilize a gunter rig to keep the mast sections shorter for transport.

Interior Comfort & Variations

The interior of the Potter 15 Mk II is often described as a "nautical pup tent," offering a surprisingly functional space for overnighting. The cabin features two berths that extend under the cockpit seats, providing enough room for two adults to sleep, albeit in close quarters. The Mk II version maximized this space by utilizing a liner that provides a cleaner finish and better insulation than the raw fiberglass found in some earlier "California" Potters.

There is no standing headroom; instead, the "sitting headroom" is sufficient for most adults to sit upright on the berths. Storage is tucked into bins beneath the cushions and in a small forward locker. While there is no dedicated galley or head, most owners utilize a portable stove and a "porta-potti" stored between the berths. A notable variation is the "Premium" versus "Standard" packages offered by International Marine, where the Premium models often included stainless steel rails, upgraded cushions, and teak trim that significantly elevated the interior aesthetic.

The boat has several "siblings" built on variations of this hull. The original West Wight Potter 14 was the wooden predecessor, while the Potter 15 "Mk I" featured a slightly different deck layout and less internal volume. The West Wight Potter 19 is the most common step-up, offering a dedicated galley, a four-berth layout, and a much heavier 300-pound keel.

The West Wight Potter 15 has a cultural footprint far larger than its physical dimensions. It gained national exposure in the United States as a recurring prize on the television show "The Price is Right" for over three decades, cementing its image as the "everyman’s" sailboat.

In the literary world, the boat is synonymous with the "small boat" movement. Stanley Smith famously sailed a wooden Potter 14 from the Isle of Wight to Sweden across the North Sea, a feat documented in his writings and often cited by International Marine to prove the design's seaworthiness. More recently, the boat has been featured in numerous documentary-style voyages on YouTube, where sailors showcase its ability to navigate the "Great Loop" or cross the Florida Strait to the Bahamas.

Known Issues & Buyer’s Checklist

Prospective buyers should conduct a thorough inspection of several specific areas common to the Potter 15 Mk II:

  1. Keel Trunk and Cable: The 100-pound galvanized steel keel is raised and lowered via a manual winch. The cable and the attachment point on the keel are prone to corrosion. Inspect the cable for fraying and ensure the winch operates smoothly without "slipping."
  2. Transom Stress: If the boat has been used with a heavy four-stroke outboard motor (rather than the recommended 2hp to 3hp lightweight motors), the transom may show stress cracks around the engine mount.
  3. Deck Core Softness: While the hull is solid fiberglass, the deck is often cored with plywood or balsa. Use a "tap test" with a plastic hammer to check for dull thuds, which indicate delamination or rot, particularly around the mast step and the chainplates.
  4. Flotation Foam: Older models used expanding foam for buoyancy. Over decades, if the hull has had leaks, this foam can become waterlogged, adding hundreds of pounds of "dead weight" to the boat and compromising its safety.
  5. Mast Step: The mast step on the Mk II is a high-load area. Check for any sagging in the cabin overhead or cracks in the fiberglass base where the mast rests.

Community & Resources

The Potter 15 benefits from one of the most active owner communities in the sailing world. The Potter Yachters is a prominent association that organizes "cruising-in-company" events and provides a wealth of technical knowledge. Additionally, the West Wight Potter Owners group on various social platforms serves as a technical wiki for modifications and repairs.

The Verdict

The West Wight Potter 15 Mk II is an ideal vessel for the "trailer-to-water" sailor who wants the security of a cabin without the expense of a marina slip. It is a forgiving, stout, and charming little boat that holds its value remarkably well.

Pros:

  • Ease of Transport: Can be towed by almost any vehicle and fits in a standard garage.
  • High Stability: Hard-chine hull and weighted keel make it feel larger and safer than typical 15-footers.
  • Active Community: Exceptional support for parts, modifications, and social sailing.
  • Durability: Simple systems and robust fiberglass construction lead to a very long service life.

Cons:

  • Limited Space: The cabin is very tight for two adults and is better suited for solo cruising.
  • Performance Limits: Not a fast boat; it will not point as high into the wind as a modern fin-keel boat.
  • Weight Sensitivity: Performance and safety can be negatively affected if overloaded with heavy gear or oversized motors.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Centerboard
Rudder
1x —
Ballast
100 lbs
Displacement
475 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
15 ft
Waterline Length (LWL)
12 ft
Beam
5.5 ft
Draft
3 ft
Max Headroom
3.75 ft
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
87 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
22.86
Ballast / Displacement Ratio
21.05
Displacement / Length Ratio (D/L) Ratio
122.72
Comfort Ratio
5.87
Capsize Screening Formula
2.82
Hull Speed
4.64 kn