In illustration D033DG below, what is the...

Question 1 of 2707066636eec28f7522a1c51c4c3

In illustration D033DG below, what is the plating indicated by the letter N known as?

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Question 1 of 27070

Q

In illustration D033DG below, what is the plating indicated by the letter N known as?

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🔍 Key Concepts

• Relationship between inner bottom (tank top) and the double-bottom tanks • Purpose of rider plating versus the main inner bottom plating • Where ceiling is normally fitted inside cargo spaces

💭 Think About

• Look at where letter N is located: Is it the main continuous plating of the double bottom, or an extra reinforcing piece attached on top of something else? • Ask yourself what part of the structure actually forms the top boundary of the double-bottom tank and supports cargo directly. • Consider whether ceiling is usually in direct contact with the tank top, or laid above it as sacrificial protection for cargo.

✅ Before You Answer

• Identify which surface forms the top of the double bottom tank across the whole breadth of the ship. • Check if N is a continuous plate or a narrower reinforcing strip over floors/girders (rider plating/floor riders). • Recall that ceiling is normally associated with protection for the tank top or inner bottom in cargo holds, not with the structural tank boundary itself.