Captains Handbook | Page 21

Every boat has a visual and audio alarm. If the latter sounds this can indicate that the oil pressure is too low or that the engine is overheating. If the alarm comes on, stop immediately and call the base. Do not continue or you could seriously damage the engine. The propeller The bow thruster must not be used for more than 5 seconds at a time. It is only there to briefly assist manoeuvres and is not designed to be played with. OPERATING YOUR BOAT The alarm In order to function properly, a propeller needs to be in perfect condition. The biggest risk of damage is whilst coming alongside. To prevent this, avoid engaging it when the stern of the boat is