This enabled them to open three of the five strongrooms , while the other two were opened with a lump hammer and cold chisel .
Divers initially entered the Captain 's cabin and opened his safe , to recover the keys to the ship 's five strongrooms .
This enabled Divers to open three of the five strongrooms , while the other two were opened with a lump hammer and cold chisel .
Divers initially entered the Captain 's cabin and opened his safe , to recover the keys to the ship 's five strongrooms .