Dead Man's Chest & Dead Man's Float were both original Myth 2 maps made by Bungie.
Ported to Myth 3 By Pezzah 25th Feb 2002
Changes in version 1.01:
Dwarves are now dwarf heros,
Heron Gaurd is now also a hero
Thanks Osiris for pointing this out
Comments/Questions to DavidPerryman@mcmail.com