Being the Boy Scout that I am, when I saw this case I thought "How cool- gotta have one". Then I realized I already had most of that stuff on the boat... somewhere. In an emergency I don't want to be thrashing through my tools looking for something so I decided to duplicate what I might need and keep it in one place. I got a 5gal plastic pickle bucket with a top from a local deli for free and was able to to put most of the stuff in it. I store it in a locker with other larger emergency items like hack saw, bolt cutters, pieces of wood, ect.
Basically, a boat a couple canals over from me developed an issue with a thru-hull. I stopped the leak in an unconventional manner using a $1 silicone wine bottle stopper plus a hose clamp. It was an "interesting" afternoon.
Janice reminded me with that wine bottle cap.
Heat exchanger 4 inch had a rubber end cap with a flat metal plate in it. That separated from the part that is hose clamped on. Otherwise it was usable.
So I used a garbage bag over the end held in place with the delaminated rubber end clamp until we could find a replacement. Not sure how long that would have lasted as it came off in like new condition a few days later.
SteveK AKA Soo Valley
You only need one working engine. That is why I have two.