The Interlake is an American planing

sailing dinghy Dinghy sailing is the activity of sailing small boats by using five essential controls: * the sails * the foils (i.e. the daggerboard or centreboard and rudder and sometimes lifting foils as found on the Moth) * the trim (forward/rear angle of ...

that was designed by Francis Sweisguth in 1932, as a one-design racer and first built in 1933.Sherwood, Richard M.: ''A Field Guide to Sailboats of North America, Second Edition'', pages 92-93. Houghton Mifflin Company, 1994. The boat design was commissioned by the Sandusky Sailing Club. Sweisguth had already designed the Star keelboat and the Interlake was designed specifically for the conditions found on

Lake Erie Lake Erie ( "eerie") is the fourth largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has t ...

and in particular on

Sandusky Bay Sandusky Bay is a bay on Lake Erie in northern Ohio, formed at the mouth of the Sandusky River. It was identified as ''Lac Sandouské'' on a 1718 French map, with early variations recorded that suggest the name was derived from Native American la ...

Production

For a time the design was built by Customflex, initially in

Toledo, Ohio Toledo ( ) is a city in and the county seat of Lucas County, Ohio, United States. A major Midwestern United States port city, Toledo is the fourth-most populous city in the state of Ohio, after Columbus, Cleveland, and Cincinnati, and accordin ...

and later in

Whitehouse, Ohio Whitehouse is a village within the Toledo Metropolitan Area in Lucas County, Ohio, United States. The population was 4,149 at the 2010 census. History The area now known as the Village of Whitehouse was originally occupied by various Native Am ...

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 ...

, but commercial production has now ended. The boat's class club, the Interlake Sailing Class Association, offers free plans for download in

PDF format Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. ...

to allow amateur construction of the design.

Design

The Interlake is a recreational

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 ...

, originally built predominantly of wood,

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 ...

construction has been allowed by the class rules since 1955. The fiberglass boats have

balsa ''Ochroma pyramidale'', commonly known as the balsa tree, is a large, fast-growing tree native to the Americas. It is the sole member of the genus ''Ochroma''. The tree is famous for its wide usage in woodworking, with the name ''balsa'' being ...

cores for the hull and the decking. The boat has a fractional

sloop A sloop is a sailboat with a single mast typically having only one headsail in front of the mast and one mainsail aft of (behind) the mast. Such an arrangement is called a fore-and-aft rig, and can be rigged as a Bermuda rig with triangular ...

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 Transom may refer to: * Transom (architecture), a bar of wood or stone across the top of a door or window, or the window above such a bar * Transom (nautical), that part of the stern of a vessel where the two sides of its hull meet * Operation Tran ...

, a rounded, transom-hung, fiberglass

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 retractable fiberglass

centerboard A centreboard or centerboard (US) is a retractable hull appendage which pivots out of a slot in the hull of a sailboat, known as a ''centreboard trunk'' (UK) or ''centerboard case'' (US). The retractability allows the centreboard to be raised to ...

, operated by a

winch A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a spool (or drum) attac ...

with a 10:1

mechanical advantage Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for ...

. It displaces . The boat has a

draft Draft, The Draft, or Draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a ves ...

of with the centerboard extended and with it retracted, allowing beaching or ground transportation on a trailer. For sailing the design has foam flotation,

mainsail A mainsail is a sail rigged on the main mast of a sailing vessel. * On a square rigged vessel, it is the lowest and largest sail on the main mast. * On a fore-and-aft rigged vessel, it is the sail rigged aft of the main mast. The sail's foot ...

boom Boom may refer to: Objects * Boom (containment), a temporary floating barrier used to contain an oil spill * Boom (navigational barrier), an obstacle used to control or block marine navigation * Boom (sailing), a sailboat part * Boom (windsur ...

roller reefing Reefing reduces the area of a sail, usually by folding or rolling one edge of the canvas in on itself and attaching the unused portion to a spar or a stay, as the primary measure to preserve a sailing vessel's stability in strong winds. Restoring ...

, a

boom vang A boom vang (US) or kicking strap (UK) (often shortened to "vang" or "kicker") is a line or piston system on a sailboat used to exert downward force on the Boom (sailing), boom and thus control the shape of the sail. The Collins English Dictionar ...

and

mainsheet traveler A traveller is a part of the rigging of a boat or ship that provides a moving attachment point for a rope, sail or yard to a fixed part of the vessel. It may take the form of anything from a simple ring on a metal bar or a spar to, especially in a ...

with a bridle. The boat may be equipped with

spinnaker A spinnaker is a sail designed specifically for sailing off the wind on courses between a reach (wind at 90° to the course) to downwind (course in the same direction as the wind). Spinnakers are constructed of lightweight fabric, usually n ...

of and

hiking straps In sailing, hiking (stacking or stacking out in New Zealand; leaning out or sitting out in United Kingdom) is the action of moving the crew's body weight as far to windward (upwind) as possible, in order to decrease the extent the boat heels (le ...

. The mast is supported by a

forestay On a sailing vessel, a forestay, sometimes just called a stay, is a piece of standing rigging which keeps a mast from falling backwards. It is attached either at the very top of the mast, or in fractional rigs between about 1/8 and 1/4 from the t ...

and

shrouds Shroud usually refers to an item, such as a cloth, that covers or protects some other object. The term is most often used in reference to ''burial sheets'', mound shroud, grave clothes, winding-cloths or winding-sheets, such as the famous Shr ...

, but no

jumper stays A fractional rig on a sailing vessel consists of a foresail, such as a jib or genoa sail, that does not reach all the way to the top of the mast. The forestay is a wire that secures the mast to the front of the boat. With a fractional rig, th ...

backstay A backstay is a piece of standing rigging on a sailing vessel that runs from the mast to either its transom or rear quarter, counteracting the forestay and jib. It is an important sail trim control and has a direct effect on the shape of the ma ...

. There is stowage provided under the foredeck. The design has a

Portsmouth Yardstick The Portsmouth Yardstick (PY) or Portsmouth handicap scheme is a term used for a number of related systems of empirical handicapping used primarily in small sailboat racing. The handicap is applied to the time taken to sail any course, and the ha ...

racing average handicap of 89.9 and is normally raced with a crew of two or three

sailor A sailor, seaman, mariner, or seafarer is a person who works aboard a watercraft as part of its crew, and may work in any one of a number of different fields that are related to the operation and maintenance of a ship. The profession of the ...

Operational history

The boat is supported by an active class club, the Interlake Sailing Class Association, which organizes races and offers free plans for the design. In a 1994 review Richard Sherwood wrote that the "Interlake was designed for Sandusky Bay, Ohio, known for its short chop. She will plane fairly readily. The bow and sheer are classic, and the forward flare throws spray down, keeping her dry. She was originally built in wood, but fiberglass was allowed in 1955. Interlake is one of the older one-design classes in the United States."

References

External links

* {{Sailing dinghies and skiffs Dinghies 1930s sailboat type designs Two-person sailboats Sailboat type designs by Francis Sweisguth Sailboat types built by Customflex

Production

Design

Operational history

See also

References

External links