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G-W Invader, (sometimes listed as GW Invader), began production in 1967 with its 10-foot and 16-foot boats.The "G-W" indicated the last names of the founders. The initial designs of 10 and 16 footers were that of sport racing boats with a very low profile, low weight, and shallow draft.
Flats boats are often small easily trailerable boats although some may reach up to 23 ft in length [6] or more. They are typically equipped with outboard motors and offer a relatively shallow draft compared to other boats of the same length, to allow for passage over sandbars, oyster beds or other submerged objects or underwater features with less risk of damaging the hull or engine.
These boats have a T-shaped rudder and centreboard that generates sufficient lift to clear the hull from the water. When this happens wetted surface area drops radically and the boats accelerate up to 1.2 to 1.5 times the speed of the prevailing wind.
The boats' shallow draft worked well in rivers while its flat bottom profile allowed heavy loading of cargoes and provided stability. The smallest batteau required only one crewman, while larger ones, reaching up to 58 feet (17.68 meters) in length, required up to five.
These boats are known to be long and sleek to cut through the water fast and have extremely shallow drafts. Boats rang from 10 ft to upwards of 21 ft on the great lakes and rivers. They usually accompany two hunters at a time using the wind to catch a sail like blind in the front of the boat while also sculling to achieve greater speed.
The fin keel-equipped version of the boat has a draft of 2.5 ft (0.76 m), while the swing keel-equipped version has a draft of 3.75 ft (1.14 m) with the keel extended and 1.75 ft (0.53 m) with it retracted, allowing operation in shallow water, beaching or ground transportation on a trailer. [1] [5]
The boat has a draft of 1.58 ft (0.48 m) with the standard fixed keel, while the centerboard-equipped version has a draft of 2.58 ft (0.79 m) with the centerboard extended and 1.58 ft (0.48 m) with it retracted, allowing operation in shallow water, or ground transportation on a trailer. [1] [2] [5]
A hydroplane (or hydro, or thunderboat) is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy. A key aspect of hydroplanes is that they use the water they are on for lift rather than buoyancy, as well as for propulsion and steering : when travelling at ...