초록 ▼

High speed electric watercraft of various configurations are provided that utilize at least one submerged enclosed hull containing an electric motor and at least one other parallel float positioned higher that the enclosed hull to provide buoyancy for a platform that can carry one or more individual

High speed electric watercraft of various configurations are provided that utilize at least one submerged enclosed hull containing an electric motor and at least one other parallel float positioned higher that the enclosed hull to provide buoyancy for a platform that can carry one or more individuals above a water surface. The watercraft optionally include features of (1) a rounded front end on the platform, (2) a platform length that is shorter than the float for stability against tipping, (3) entryways that do not require stepping over a vessel hull, (4) dimensions fore and aft that minimize spray onto the rear of the platform, (5) shock absorbers to provide a smoother ride, and (6) adjustable struts that connect floats with the platform to allow control of the platform height above the water surface. These and other features are made possible by a fast electric design that avoids certain problems of vessel type watercraft.

대표청구항 ▼

High speed electric watercraft of various configurations are provided that utilize at least one submerged enclosed hull containing an electric motor and at least one other parallel float positioned higher that the enclosed hull to provide buoyancy for a platform that can carry one or more individual

High speed electric watercraft of various configurations are provided that utilize at least one submerged enclosed hull containing an electric motor and at least one other parallel float positioned higher that the enclosed hull to provide buoyancy for a platform that can carry one or more individuals above a water surface. The watercraft optionally include features of (1) a rounded front end on the platform, (2) a platform length that is shorter than the float for stability against tipping, (3) entryways that do not require stepping over a vessel hull, (4) dimensions fore and aft that minimize spray onto the rear of the platform, (5) shock absorbers to provide a smoother ride, and (6) adjustable struts that connect floats with the platform to allow control of the platform height above the water surface. These and other features are made possible by a fast electric design that avoids certain problems of vessel type watercraft. itch, when switching over an optical path to a switchover target output terminal to which the optical path is newly connected from a pre-switchover output terminal through which the optical path is connected to the input terminal before the switchover, temporarily connects the optical path to both of the pre-switchover output terminal and the switchover target output terminal with a bridge connecting function. First and second monitor circuits for monitoring a state of the photo signal are disposed, respectively, between the input terminal and the optical switch, and between the optical switch and the output terminal. A connectivity of the optical switch is monitored from connectivity information, indicating the states of the photo signals before and after switching over the optical path, which is given from the monitor circuits. Prior to switchover of the optical path, the connectivity of the optical switch can be confirmed, and a reliability on the optical transmission system using the optical switch is thereby enhanced.