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The RK 20 is an American trailerable
sailboat A sailboat or sailing boat is a boat propelled partly or entirely by sails and is smaller than a sailing ship. Distinctions in what constitutes a sailing boat and ship vary by region and maritime culture. Types Although sailboat terminology ...
that was designed by
Lyle C. Hess use both this parameter and , birth_date to display the person's date of birth, date of death, and age at death) --> , death_place = , death_cause = , resting_place = , resting_place_coordinates = , burial_place ...
as a cruiser and first built in 1972.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 126.
International Marine S&P Global Inc. (prior to April 2016 McGraw Hill Financial, Inc., and prior to 2013 The McGraw–Hill Companies, Inc.) is an American publicly traded corporation headquartered in Manhattan, New York City. Its primary areas of business are finan ...
/
McGraw-Hill McGraw Hill is an American educational publishing company and one of the "big three" educational publishers that publishes educational content, software, and services for pre-K through postgraduate education. The company also publishes referen ...
, 2010.
The RK 20 is a development of the Hess-designed
Balboa 20 The Balboa 20 is an American trailerable sailboat that was designed by Lyle C. Hess as a cruiser, at the request of Richard Arthur and first built in 1967.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 84. Internationa ...
, as is the Ensenada 20.


Production

The design was built by RK Industries, a subsidiary of
Coastal Recreation Coastal Recreation, Inc was an American boat builder based in Costa Mesa, California. The company specialized in the design and manufacture of fiberglass sailboats designed by well-known naval architects, including Lyle C. Hess, Peter Barret ...
, in the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
. It was built between 1972 and 1981, but it is now out of production.


Design

The RK 20 is a recreational
keelboat A keelboat is a riverine cargo-capable working boat, or a small- to mid-sized recreational sailing yacht. The boats in the first category have shallow structural keels, and are nearly flat-bottomed and often used leeboards if forced in open w ...
, built predominantly of
fiberglass Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cl ...
, with wood trim. It has a
masthead sloop A masthead rig on a sailing vessel consists of a forestay and backstay both attached at the top of the mast. The Bermuda rig can be split into two groups: the masthead rig and the fractional rig. The masthead rig has larger and more headsails, a ...
rig; a spooned,
raked stem The stem is the most forward part of a boat or ship's bow and is an extension of the keel itself. It is often found on wooden boats or ships, but not exclusively. Description The stem is the curved edge stretching from the keel below, up to ...
; an angled transom; a transom-hung
rudder A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, aircraft, or other vehicle that moves through a fluid medium (generally air or water). On an aircraft the rudder is used primarily to counter adverse yaw a ...
controlled by a
tiller A tiller or till is a lever used to steer a vehicle. The mechanism is primarily used in watercraft, where it is attached to an outboard motor, rudder post or stock to provide leverage in the form of torque for the helmsman to turn the rudder ...
and a
swing keel The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in B ...
or fixed fin keel. The swing keel version displaces and carries of ballast, while the fin keel version displaces and carries of ballast. Two cabin designs were available, a trunk cabin and a raised deck version. The fin keel-equipped version of the boat has a draft of , while the swing keel-equipped version has a draft of with the keel extended and with it retracted, allowing operation in shallow water, or ground transportation on a trailer. The boat is normally fitted with a small
outboard motor An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method o ...
for docking and maneuvering. The design has sleeping accommodation for four people, with a double
"V"-berth A berth is a bed or sleeping accommodation on vehicles. Space accommodations have contributed to certain common design elements of berths. Beds in boats or ships While beds on large ships are little different from those on shore, the lack ...
in the bow cabin and two straight settee berths in the main cabin. Cabin headroom is . The fresh water tank has a capacity of . The design has a PHRF racing average handicap of 264 and a
hull speed Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-t ...
of .


Operational history

In a 2010 review Steve Henkel noted, "the RK20 fixed-keel version would seem preferable, since it eliminates the mechanical problems some owners have experienced with the swing keel."


See also

*
List of sailing boat types The following is a partial list of sailboat types and sailing classes, including keelboats, dinghies and multihull ( catamarans and trimarans). Olympic classes World Sailing Classes Historically known as the IYRU (International Yacht Racing ...
Related development *
Balboa 20 The Balboa 20 is an American trailerable sailboat that was designed by Lyle C. Hess as a cruiser, at the request of Richard Arthur and first built in 1967.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 84. Internationa ...
* Ensenada 20


References


External links


Photo of an RK 20
{{Trailer sailers and Trailer yachts worldwide Keelboats 1970s sailboat type designs Sailing yachts Trailer sailers Sailboat types built in the United States Sailboat type designs by Lyle Hess Sailboat types built by Coastal Recreation, Inc