An operating condition of an outboard motor 1 is detected by an ECU 3, and
then, is transmitted to a remote monitoring apparatus 6 using a mobile
phone 5. The condition data transmission is made by only access from the
outboard motor 1 side, therefore, security can be secured. When confirming
a failure based on the condition data, the remote monitoring apparatus 6
decides the cause of failure by troubleshooting, and then, give
information about measures to a boat 2 equipped with the outboard motor 1.
Troubleshooting is carried out by acquiring a program from a server of
maker, and the cause of failure is transmitted to the server so as to be
stored as user information. The remote monitoring apparatus 6 orders
necessary maintenance parts so as to improve quickness of maintenance.