A standby vessel stationed close to a drilling platform, experienced a “black-out” which was caused by water contamination of fuel and occurred shortly after switching from one service tank to another. The water was drained from the tank and fuel system. The main engine was restarted and was running normally. To provide electric current for lighting, steering etc., one of the auxiliary engines had to be started. Upon trying this, it was discovered that the spare starting air bottle was empty although the pressure gauge indicated full pressure.
Officer of the Watch 