What a shame. Maybe it is R.I.P. for the missing sailors who couldn’t even swim away. Something about how the two boats hit one another maybe — danger zones close to point of collision.
If the guys were on the port side, they could have been thrown into the water as the ship rolled with the force of the collision and then sucked under as the ship continued its forward momentum. If on starboard where the impact occurred, they would have been crushed to pulp and so still onboard under the mashed metal.
Either way RIP.