I own no stock in DAN (Divers Alert Network), but they have great offshore safety stuff for diving that certainly translates to sailing. They just advertised this first aid kit for $150 that comes in a Pelican case as well as manuals on marine medicine, choking, how to stop bleeding, etc., and it's all organized into "injury-specific compartments." I'm assuming people can order one even if they're not DAN members. If not, let me know.

https://www.diversalertnetwork.org/d...ril+2014+US+NG