31320959navigational instrumentsPT2026-03-30 20:26:31UF31320960navigational instrumentNDUF31320961instruments, navigationNDUF31320962navigation instrumentNDUF31320963instruments, navigationalNDUF31320964navigational toolsNDUF31320965tools, navigationalNDBT31324446equipment for transportationPTBT31306259aids to navigationPTNT31345367compassesPTNT31345369gyrocompassesPTNT31345381sextantsPTNT31345362alidadesPTNT31345364sounding devicesPTNT31345366[temporary alphabetical list: navigational instruments]PTRT31314596navigatorsPT