The utility model relates to a bulkhead form discloses a broken line type bulkhead suitable for floating production storage unit, including setting up between two horizontal bulkheads of midship and controlling the symmetrical broken line limit longitudinal bulkhead of the side of a ship, every side broken line limit longitudinal bulkhead is including the oblique bulkhead of middle straight bulkhead with the front and back setting. Wherein, is the length between the two horizontal bulkheads 13 1 4 the captain, is original limit longitudinal bulkhead of the more traditional floating production storage unit of straight bulkhead close to well longitudinal bulkhead 1 2 rice, is the bulkhead 10 with the contained angle of captain's direction to one side 15 the degree. The utility model discloses break away from the constraint of traditional boats and ships theory, adopted the design of broken line type bulkhead, reduced cargo oil cabin hold capacity in amidship department, at prelude and afterbody increase cargo oil cabin hold capacity to change hull structure weight and distribute, make amidship weight reduce, and then reduce the sagging moment of flexure, make floating production storage unit's design more reasonable, can reach and reduce still water bending moment, reduce the purpose of floating production storage unit steel use amount.