The early few 747s in BOAC had Loran by the copilot's right knee because the good old CAA did not trust the 3 Carousel IV INS's fitted (despite Appollo 11 using just one to get to and land on the moon). Copilot had to check INS position with Loran. This soon stopped.
Also the early 747's actually had a sextant mounting. This was eventually used as part of the cockpit smoke evacuation drill. - Although a strategically mounted cent coin held it open enough for the few smokers to have a fag and direct the smoke overboard.