A coaster was on a journey in a fjord. Early in the morning, when the ship was to change course, she collided with a small lighthouse. The reason why the collision took place is unknown. The foundation of the lighthouse was circular with a flat top just underneath the water surface. Its diameter was bigger than the diameter of the lighthouse itself, situated right on top of the foundation. This construction causes a rather sharp outer edge, which could easily rip a ship's hull. This was what happened - the ship's hull was ripped open and she sank within minutes. Two persons on the bridge died. Two other crew members survived although they could not reach the survival suits which were kept under port bridge wing as the ship immediately listed to port and put them out of reach. One of the survivors managed to launch the starboard life raft. Another crew member was down in the mess room and threw out a couple of life jackets. He did not manage to get out of the mess room. The investigation found that the hydrostatic releases to the rafts had not been properly mounted. If the starboard side raft had not been launched manually, no raft would have been released.We can not understand from the passage ………………..