| 摘要 |
A power supply system for a boat LAN system with plural engines can comprise operator's devices, such as speedometers, tachometers, remote controls, and the like in the hull. Plural propulsion units can be mounted on the hull, each of which can include engines for driving respectively the plural propulsion units. A boat LAN system can constitute a communication network between the operator's devices and engine control sections of the engines. Batteries can be provided corresponding to the engines and connected through power switches. A system power supply circuit can also be provided for connecting a battery of selected one of the plural propulsion units to the boat LAN system. Switching circuits for connection to the boat LAN system while bypassing the power switch corresponding to the selected one propulsion unit can be provided which correspond to other power switches of other propulsion units. Drive circuits for turning on and off the switching circuits as interlocked with other power switches can also be provided. Plural switching circuits corresponding to the power switches of the respective propulsion unit engines are connected in parallel with the battery of the selected one propulsion unit. Drive circuits for turning on and off the corresponding switching circuits as interlocked with the respective power switches are provided.
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