Ocean stations were Coast Guard cutters which remained on station for six-eight weeks at a time, steamed in a predetermined grid that was reported to the aeroplane for a positive fix, and had NDB's that were very useful.
A lonely job, I would think.
Loran A.
Similar in principle to Loran C, but was a completely manual operation, IE: the operator (pilot or navigator) stared into a CRT, determined a line of position, and plotted it on the Loran chart....and hoped like hell not to have a lane skip.
Come to think of it, the good 'ol days weren't so easy after all....
