Quartermaster 2nd Class Martineau, from Ft. Lauderdale, Fla., uses a sextant to shoot the sun line from the port bridge wing of USS Blue Ridge (LCC 19).

Aboard USS Blue Ridge Quartermaster 2nd Class Martineau, from Ft. Lauderdale, Fla., uses a sextant to shoot the sun line from the port bridge wing of USS Blue Ridge (LCC 19). U.S. Navy photo by Photographers Mate 1st Class Novia E. Harrington. File# 031025-N-8955H-005