Section 7 Cooling Water System

701. Cooling water system

1. Where main engines and essential auxiliary engines are cooled with water, the cooling system is to be so arranged that the stand-by cooling water pumps can be used even if one of the cooling wa- ter pumps is out of use.

2. Where two or more main engines operating respectively are provided, and where it is possible to give a navigable speed even if one of the engines attached with their own cooling water pumps is out of order, the stand-by cooling water pumps may be omitted.

3. In case of engines attached with their own cooling water pumps, the stand-by cooling water pumps may be omitted.

4. The sea inlet lines are to be provided with strainers which can be cleaned without interruption to the sea water supply. In small crafts, however, these strainers may be omitted with approval of the Society. 【See Guidance】

5. Sea water cooling systems for main engines and essential auxiliary engines are to be connected to two sea inlets parted respectively as far as practicable.