When I say learn the systems that means ABYC codes, design, installation and all.
Have you ever read through the codes? They are almost no different then the part of building codes that says "the door in the bathroom must be XX inches wide".
Here is an except from the air condition code on installation:
Ap.6.1 INSTALLATION RECOMMENDATION
Ap.6.1.1
Avoid the illegal discharge of refrigerants into the atmosphere. Refer to manufacturer's instructions for evacuating and recharging.
Ap.6.1.2
Use a refrigerant recovery system to recover refrigerants that cannot be legally discharged into the atmosphere. Refer to manufacturer’s instructions for refrigerant recovery.
Ap.6.1.3
Sea water discharge should be located where it can be visually checked for water flow, and as close as practicable to the waterline to reduce noise.
They don't tell how to design anything, they just specificy what the design should do (except in the case of electrical, because it actually gets into specifics on wire size etc). The code doesn't specify how much cooling capacity is required on a boat, one has to calculate that on his own. I did'nt see anywhere that the code gave specifics on hull construction techniques or thickness either...other than "must be strong enough to do the job" In all, it's bascailly no different than building codes. The ABYC codes are not like SAE or ASME requirements.
In the end, it is a reference and memorizing such things is a waste of brain power IMHO. Besides, if one truely and intuitiviely understands the fundamentals, the design and installation will usually exceed the code. Also, codes are very generic and it is impossible to put on paper what will work for every situation.
I'm not trying to be a smartass by any means, but right now I'm building my brother's house and am having a run through with the county inspectors AND administrators over some code stuff. A quick funny to any of you familiar with the system, I had the head county code administrator tell me to my face that PE and architect licenses "do not mean shit". I didn't discuss with him but let him run his mouth. He's "seen all kinds of bad designs by engineers and has a blacklist". I kindly informed him that it is the state's authority to grant and revoke licenses, not his.
Apparently this same county administrator that is a failed contractor and might not have finished HS knows more about design and structures then licesned engineers and architects. He looked at a stamped drawing in front of my face for some deck bracing and said "I don't think that is going to be enoguh"....I wanted to ask him if he could shoe me his degree and license, because I saw the guy's that made the drawing.
And of course, this whole theosco holds up my project and costs my brother money
Cliff notes: codes don't guarantee a good product, they are just a checkup for boiler plate stuff.
edit: spelling lol