Hello, do the marines pariticipate in the Royal Navy Judo practise? The reason I ask is that I used to train as a civvie with the RN at HMS Calliope, and they weren't much cop (no offence to the lads and lasses I trained with!) as as a civvie I trained with a breakaway group of martial artists who studied the martial art of Judo rather than the Olympic accedited sport. They also used crash mats, which are for puffs. If you don't want to get thrown and hurt, then don't let your opponent throw you!