I'm working on a third book of seagoing memoir. I recall a visit by the radio surveyor in the Tees in 1959 (SS Mahronda of Brocklebanks). The surveyor made great play of inspecting the batteries (SG etc) and the spares locker. We ran the TX into a dummy aerial (what sort of circuit was this?). At 84, my memory is not the sharpest. Is there anyone who can say a bit more about what was covered in a radio survey in the 50s/60s? We might even have a real surveyor mid our ranks.