MGD -
That uniform is for the oiks (
), but yes - they never get confused for any other service in that rig.
It may seem like a silly rig, but it's because the RN has real history and tradition
The bell bottoms were designed to make it easier to roll up the trouser legs when swabbing down the decks, the tea towl was to stop the main uniform getting soiled by the tar used to tie back a sailors hair, the cap - I admit, who knows, but it's no worse than the RAF thunderbirds hat