Bearing, 281(23), 294(38)
Boat’s course, 209(71), 289(35), 294(35), 297(73), 417(51)
Coast Guard boat, 138(95), 163(53), 282(33), 419(77)
Ship’s course, 139(), 268(46), 276(30), 281(,20), 297(), 588(57)
Ship’s location, 297(74), 417(49)
Ship’s location using LORAN, 598(53)
Ship’s power, 509(45)
Submarine, 124(60), 271(21)
Tugboats, 276(29)