https://en.wikipedia.org/wiki/Byford_Dolphin

explosive decompression in 1983 that killed four divers and one dive tender, as well as badly injured another dive tender.

excerpt:
Investigation by forensic pathologists determined that Hellevik, being exposed to the highest pressure gradient and in the process of moving to secure the inner door, was forced through the crescent-shaped opening measuring 60 centimetres (24 in) long created by the jammed interior trunk door.