Section 1 General

101. Definition

The deep tank is a tank used for carriage of water, fuel oil and other liquids, forming a part of the hull in holds or tween decks. The deep tanks used for carriage of oils are designed as "deep oil tanks", if necessary.

102. Earthing

Metallic parts, pipes, etc. in tanks are to be properly earthed.

103.

Application

1. The construction of all watertight division walls, aft peak tanks and all deep tanks in holds and between decks excluding deep oil tanks for carriage of oils having a flash point below 60℃ is to

be in accordance with the requirements in this chapter. The part concurrently serving as a water- tight bulkhead is to be in accordance with the requirements for watertight bulkheads.

2. The construction of deep oil tanks for carriage of oils having a flash point below 60℃ is to be in accordance with the discretion of the Society.

104. Division Walls in Tanks

1. Deep tanks are to be of proper size and to be provided with longitudinal division walls to meet the necessity for stability under service conditions as well as during filling or discharging.

2. Fresh water tanks, fuel oil tanks and other deep which are not intended to be kept entirely filled in service conditions are to be provided with additional division walls or deep wash plates as nec- essary as to minimize the dynamical forces acting on the structural members.

3. Where it is impracticable to be in accordance with the requirements in the preceding 2, the scan- tlings of structural members specified in this chapter are to be properly increased.

105. Consideration for Watertightness of Tanks

Frames and beams are not to pass through the top laminates and bulkheads laminates of deep tanks.