The RK 20, produced by RK Industries—a Maryland-based subsidiary of Coastal Recreation Inc.—represents a distinct East Coast chapter in the history of accessible American trailer-sailers. While Coastal Recreation’s California headquarters focused on the prolific Balboa and Aquarius lines, the RK 20 was positioned to capture the regional market with a design that prioritized simplicity, ease of transport, and coastal versatility. Built during the 1970s, the RK 20 is often recognized as a close relative to the Balboa 20, sharing much of the same design DNA that emphasized a robust fiberglass hull and a retractable keel system, making it an ideal candidate for gunkholing in shallow Atlantic estuaries.
RK 20 Information, Review, Specs
- Make
- RK
- Model
- 20
- Builder
- RK Industries
- Designer
- Lyle C. Hess
- Number Built
- Production Year(s)
- 1972 - 1981
Sailing Performance & Handling
The sailing characteristics of the RK 20 are defined by its forgiving nature and its reliance on a swing-keel configuration. With a relatively high ballast-to-displacement ratio for its size, the boat is remarkably stable for a 20-foot trailer-sailer, though, like many light-displacement vessels of its era, it can be somewhat tender in gusts. The boat’s sail plan is modest, typically featuring a masthead rig that provides enough power to move the boat in light air without becoming overwhelming for a novice sailor when the breeze picks up.
In terms of handling, the RK 20 tracks reasonably well thanks to its deep swing keel when fully deployed. Owners frequently report that the boat is easy to single-hand, as the controls are generally led to the cockpit. While it lacks the high-pointing ability of a deep-draft racing keel, its performance is more than adequate for recreational cruising. The boat's ability to "beach" itself by retracting the keel—a design hallmark of Coastal Recreation’s naval architects like Peter Barrett—allows sailors to explore shallow waters that would be inaccessible to more rigid designs.
Interior Comfort & Variations
Despite its compact 20-foot frame, the RK 20 utilizes an "open-plan" interior layout to maximize the perception of space. The cabin typically features a V-berth forward, which serves as the primary sleeping area, and two short quarter berths that extend under the cockpit seats. While the headroom is strictly limited to "sitting" height, the cabin provides sufficient shelter for weekend trips.
Materials used in the interior were typical of the 1970s "mass-market" fiberglass era, utilizing teak trim and vinyl-covered cushions to provide a touch of warmth. Variations of the model were sometimes marketed under different regional branding, and the RK 20 shares a near-identical interior mold with the Ensenada 20. The galley is rudimentary, usually consisting of a small molded area for a portable stove and a basic sink, reflecting the boat's purpose as a "camper-cruiser" rather than a long-term liveaboard.
Known Issues & Buyer’s Checklist
When inspecting an RK 20, the primary concern is the integrity of the swing keel assembly. Over decades of use, the pivot bolt and the cable winch system can suffer from galvanic corrosion or mechanical wear. Buyers should check for any "thumping" sounds while underway, which may indicate a loose pivot or a worn keel trunk.
Structural deck issues are another common "gotcha" for this model. Like many boats from the 1970s, the RK 20 utilizes a wood-cored deck. Moisture can seep into the core through poorly bedded deck hardware, such as stanchions or cleats, leading to soft spots. Furthermore, the mast step area should be scrutinized for compression; if the deck shows a visible "smile" or depression under the mast, the internal compression post or the deck core beneath it may have failed. Finally, ensure the rudder gudgeons and pintles are secure, as these are high-stress points on a boat designed for frequent trailering.
The Verdict
The RK 20 remains a stalwart choice for budget-conscious sailors looking for a trailerable coastal cruiser with a pedigree of solid American fiberglass construction.
Pros
- Portability: Its light weight and retractable keel make it exceptionally easy to trailer and launch from a standard boat ramp.
- Versatility: The shallow draft allows for exploration of thin water and easy beaching.
- Simplicity: A straightforward rig and minimal systems make it an excellent learning platform for new sailors.
Cons
- Limited Headroom: The low cabin profile requires a "crawling" lifestyle while down below.
- Aging Hardware: Many original RK 20s still carry 1970s-era deck gear that may require modern upgrades.
- Core Vulnerability: Prospective owners must be diligent in checking for deck rot and keel trunk maintenance.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Wing
- Rudder
- 1x —
- Ballast
- 550 lbs
- Displacement
- 1950 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 20 ft
- Waterline Length (LWL)
- 17.5 ft
- Beam
- 7.08 ft
- Draft
- 4 ft
- Max Headroom
- -
- Air Draft
- 27.5 ft
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 21 ft
- E (Main Foot)
- 8.2 ft
- I (Foretriangle Height)
- 23.5 ft
- J (Foretriangle Base)
- 8.8 ft
- Forestay Length (est)
- 25.09 ft
- Sail Area
- 190 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 19.47
- Ballast / Displacement Ratio
- 28.21
- Displacement / Length Ratio (D/L) Ratio
- 162.43
- Comfort Ratio
- 12.17
- Capsize Screening Formula
- 2.27
- Hull Speed
- 5.61 kn