TAC-100 Underwater Navigation Board

The TAC-100 Underwater Navigation Board is the original navigation platform used by professional divers around the world. The TAC-100 integrates a underwater compass onto a rugged and lightweight high impact plastic console with easy-to-grip handles. The underwater compass utilizes a black compass card with luminous markings to indicate heading. Internal lubber-lines keep the diver on course. A built-in adjustable chem-light holder on the console illuminates the compass for night ops. The TAC-100 offers different instrumentation options and comes with a padded carrying bag.


Stock Number Reference:

Board, Navigation, Diver’s

Part No: TAC-100

NSN: 4220-01-462-9685

Assign Date: 1999-02-26

Item Part No NSN Assign Date
Board, Diver’s, Navigation TAC-100-1 4220-01-449-7912 1997-10-15
Compass, Magnetic, Mounted TAC-100-2 6605-01-449-7911 1997-10-15
Gage, Depth, Diver’s TAC-100-3 4220-01-462-9684 1999-02-26
Bag, Diving Equipment TAC-100-4 4220-01-527-6759 2005-02-11

A U.S. Navy SEAL, dressed in scuba gear, carries waterproof weapons, a depth gauge, and an underwater bomb while training in the surf at the Naval Base Coronado in California.