Dynamo whilst I like your enthusiasm I have to ask how does a Uni degree in Marine Sport Technology translate into Naval Architecture?
To answer your earlier question even though it's a bit late now- You could sign on as Crew if you had the STCW 95 Basic Training and an ENG 1 ( Seafarers Medical). If you have any doubts about the medical bit I would advise doing one first before spending all that money only to find you can't work with any of the quals you have got.
If you are going to do:
* RYA Day Skipper Practical
* RYA Day Skipper Theory
* RYA National Powerboat Level 2
* UKSA Crew Training Certificate
* STCW 95 Basic Training
o RYA / MCA Personal Survival Techniques
o MCA Personal Safety and Social Responsibility
o MCA Fire Prevention and Fire Fighting
o MCA Elementary First Aid
* RYA Diesel Engine Maintenance
* RYA Short Range Radio
in 6 weeks which as it is the UK won't include any weekends how much depth of knowledge do you really expect to have in all these subjects?
Having these certs may well put you in front of someone who hasn't but please don't expect to step from the dock to the bridge in one step. You will still have to start off near the bottom of the ladder and work your way up.( the ships side, superstructure and mast all the while with a bucket and brush in hand, while someone further up the ladder has the hose
Now that the doom and gloom is out of the way I wish you good luck and ask that you keep us updated with your adventures.
We were all young once and have come to yachting through a wide variety of routes.