Evolving rules for planing boats, requiring level flotation when swamped with maximum payload and rated engine, led to the demise of production by Grumman in 1979. Without any changes to the boat, the payload rating dropped to 550 pounds. Due to its unusual planing ability, the United States Coast Guard in the 1970s applied a different rating rule. Ballasting the bow greatly improves operation under power.Īs a canoe, the Grumman Sport Boat was originally rated for an 1,100 pound payload. Moving a lone operator forward to the middle seat enables planing performance over 10 mph with as little as 2.5 hp. It can plane with as little as a 3.5 hp motor, and has been used with as much as a 25 hp motor. In current production, it is rated for 805 pounds capacity and a 7 horsepower (5.2 kW) outboard motor. It is manufactured in a fashion similar to an aircraft, made of a stressed skin aluminum, riveted together, and weighs slightly over 110 pounds. It can also be poled or paddled, but is too wide for efficient paddling. The Sport Boat is designed to be rowed, sailed, or powered by an outboard motor, and is among few designs to be fairly efficient at all three. Along with the Coleman Scanoe, Grumman sportboats are patterned after "Grand Lakers", wooden fishing guide boats built on Grand Lake, Maine for oar power, subsequently modified for the advent of small outboard engines with the addition of more bearing aft and a flat tumblehome transom. ( Learn how and when to remove this template message)Ī Grumman Sportboat, (also Sport Boat, SportCanoe, or Sportee) is a 15' 4" long, 43" wide square stern canoe manufactured in the United States. ( September 2022) ( Learn how and when to remove this template message) You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |