These are Navy shore units from the Pacific War. A hull stays on the ships list. A unit page is the men and the gear sent ashore to build or run a base.
Building the Navy’s Bases in World War II, the history of the Bureau of Yards and Docks, names four standard assemblies: LION, CUB, OAK, and ACORN. The Seabees were the construction battalions inside that work, and a great deal of it besides. A numbered battalion or a numbered ACORN is its own page when a Navy record of that unit is in hand.
- LION A main fleet advance base, about the size of Pearl Harbor before the war.
- CUB A secondary advance base, about one-fourth of a LION.
- OAK A major air-base assembly. In the July 1942 plan, one OAK was four airfield units.
- ACORN A smaller advance air base. The movable piece of the air-base plan.
- Seabees The Navy’s construction battalions. The name is the initials C.B.
The sizes below are the figures those books print. A later allowance is not the same number as an earlier one, and both stay with the book that prints them.