The Industry is changing and will eventually be regulated by 1 governing body in the UK and that will be City and Guilds and will be covered by doing an MSO course, this in conjunction with the STCW95 and other paperwork etc will get you into maritime. You can spend your money on other courses but this will becoming in very soon, try AMBREY RISK and look at their website as you will get an interview upon completing their course if you pass it.