Hull Structure Damage Examples 1, Container Ships 2, Bulk Carriers 3, Oil Tankers 4, RO/RO
1, Container Ships
(a)4100 TEU Container Ship
After 3 months’ service at sea, cracks were found among 6 of these sister ships.
They were mainly located at hatch coamings, main decks and longitudinal bulkheads in the second cargo holds.
These cracks firstly generated from the weld beads of the main decks, then grew and propagated to upper hatch coamings and lower longitudinal bulkheads.
They are mainly caused by ill consideration of impact pressure of sea water and green water, so the strength of plate panels of main deck and shell is undoubtedly insufficient.
The transition of the plate thickness is also unreasonable.
1. (b)5668 TEU Container Ships
Two longitudinals on the bulkhead were broken, and there was a 1.2 m long crack on the longitudinal bulkhead. It can be concluded that the span of these longitudinals in high stress area are too long to provide sufficient strength for avoiding longitudinal plate from