Special tool for changing spark plugs on a sea ray boat?

we have a sea ray boat and the spark plugs are bad and we need to change them and they are really hard to get off and are located in the worst place (right under the engine) and is there a special tool we can buy to get under there a lot easier

please help :)
Special tool for changing spark plugs on a sea ray boat?
yeah, extensions and universals for your ratchet and socket set, nothing on a boats ever easy to get to, just take your time, think through it and with simple hand tools and patience you will be ok

medium length hair

msdn