Note: these aren't official, I'm just making them up ... as you all should be doing. Terms that resonate will live on, terms that don't will sink into oblivion

Sparkie - electrical engineer.
Crispy bacon - someone exposed to massive electrical discharge, eg. flashover or other accident
Toasted - to be hit by a non-lethal electrical discharge. "Did'ja hear about Smithers? Right next to the forrard port trim tank when we took that torpedo hit." "'Ow bad? Crispy?" "No, only lightly toasted. But he's still cursing." "Why?" "Took off half his precious mo', dinnit?"
Bangers - aerial torpedos.
Airship - derogatory term used to describe non-electrical flying machines (Herr Zepellin's gasbags, or those paper kite thingies made by the bicycle brothers). Calling a leviathan an "airship" is, to airmen, like calling a battleship a "boat".
Anyone determined to know period English slang for genitals should listen to "Daddy wouldn't buy me a bow-wow" sometime. Other music-hall hits of the Edwardian era are also goldmines of period scatology and filth, I'm delighted to say

Anyone for a few quick verses of the Marrow Song?

"Such a lovely colour, so nice and round and fat ..."
W.