I worked on seismic survey vessels for several years and wrote a poem whilst working for Decca Survey about their radio navigation system "Pulse/8".

I recently set it to music, so I guess it's now a song. Not performed it anywhere yet, and probably wouldn't except to a gathering of former seismic survey crew, as it makes no sense at all to anyone who wasn't involved in the industry in the 1980s.

It's called "Bloody Pulse/8"

I gave a copy to the Chief Navigator of a company whose vessels I'd been on, and they published it in their company mag....prompting Racal Survey (which had by then taken over Decca Survey ....and yes, it's the same Decca of Decca Records!) to threaten legal action for defaming their system (Rho/3 Pulse/8, a variant variant of the vanilla system). I'd helped develop the system, so if anyone had a right to point out its shortcomings, I reckon it was me :-) .