<<<If the ship were to turn off TACAN, imagine how messed up we'd be today? Years ago, crews DF'd to find the ship and then landed without talking on the radio... We can't do that today!>>>
Operating under EmCon A/B "back in the day"... IIRC, first guy(s) found the boat...came up on NavCad Common (222.2 Mhz)...broadcast a short count for DF, Air to Air Tacan (DME only) for distance...bingo!! Easy-Peasy!!