Tools
As a certified tech and once the half-owner of the Ford Lehman dealership, as well as Cummins and CAT I highly recommend a very simple set of tools specifically selected for your vessel and not someone else's. For almost 95% of the service we used to do at the docks, I used a simple metal Snap-On or Chrafsmen toolbox that I could carry. It was carpeted along the bottom 3rd.
My tools then were all Snap-On as that was my daily profession. And when customers saw how organized and clean we were they always commented favorably. There is no tool like Snap-On. The way they are organized has no equal.
BUT... before y'all harp all over me, believe me, I get it. I don't even know what they cost anymore. I'm sure it's thru the roof.
That being said, NO you do not NEED Snap-On. If money is no concern check it out.
I would stay away from cheap tools like Husky and the like for marine service. You made a massive investment in your boat.
I guess my point is to see exactly what you need and nothing else. Keep it very simple to exactly what you will be doing. You DO NOT need a full set of everything. You will have to determine if your vessel uses a mix of SAE and Metric and go from there.
Determine what you are comfortable working on and have that knowledge. The more you have the harder it is to find what you need.
There will most likely be some specialty tools you may need or need to make.
Yes, we had many specialty tools we kept on our service trucks and put into use often. They were usually very specific and heavy.
Another thing you could do is have a good service tech meet you on your boat and go over all the basic service requirements. I have done this with many customers in the past.
Have your cruise kits all sorted out as well, and know what tools will be used to service those parts.
The more knowledge you have the more you will know what you need and don't need.
As I said, I used a simple metal carry toolbox to do most of the service required during the 10 years I did that kind of work.
Just don't cheap out on poor-quality tools, they will just frustrate you to no end. When I first started as a tech I had all Craftsmen tools. That is probably all you will ever need.
Once I moved to higher-quality tools I never went back. For me, I still own all those tools and they will be in our next new vessel along with some Craftsmen tools. Gear Wrench has some nice sockets and I do use them on projects that I might damage my better tools.
Again, please don't get me wrong. As I mentioned, the average user does not need Snap-On. But either way, get a good organization method. The sockets on a holder and wrenches in a pouch of some sort. It really keeps the frustration down and if you're in an emergency situation, you won't be digging through all your tools trying to locate one tool.
Get yourself some 5-gal buckets to use for dirty rags etc. And buy a ton of red rags and blue paper towels. You can sort your red rags as new and slightly used. Toss the old ones.
Happy boating