What is a collision bulkhead ? why is it always situated forward ?

1
FOLLOW

Purpose:-
§ Avoids flooding of ship in case of damage to bows.

Location
§ Location is such that it is not so much forward as to get damaged on impact , Neither it should be too far aft so that compartment flooded forward causes extensive trim by head. As a rule located at minimum distance to get maximum space for cargo.
§ Minimum at 1/20 of ships length from forward perpendicular
§ The collision bulkhead is continuous to upper most continuous deck
§ The collision bulkhead is 20% stronger than other bulkheads
§ Collision bulkhead is 5 to 8 percent of ships length from forwa

146
FOLLOW

Purpose:-
To Avoid flooding of ship in case of damage to bows.
Location
Location is such that it is not so much forward as to get damaged on impact , Neither it should be too far aft so that compartment flooded forward causes extensive trim by head. As a rule located at minimum distance to get maximum space for cargo.
A Minimum at 1/20 of ships length from forward perpendicular
The collision bulkhead is continuous to upper most continuous deck
The collision bulkhead is 20% stronger than other bulkheads
Collision bulkhead is 5 to 8 percent of ships length from forward.