Since the OP used the term 'fire suppression' in the inquiry, I suspect he has some knowledge already...
All that said, some years ago our little YC arranged to have a group of us attend a half day course for boaters at a facility at nearby PDX. There were about 30 of us, and the lecture was a good grounding in what kind of fire is attacked with what kind of extinguishing agent. Then we went outside where they had a row of charged powder extinguishers ready, and a large metal pan with a screen over the top and a feed pipe of propane or natural gas ( I forget which).
It lit off with a whoosh, with tall flames. We all (all...., guys and gals) each put out the fire with a fire bottle. Pull the pin, attack the base, back n forth, and etc. We all succeeded, too!
**Editorial note: have some larger bottles on board than the minimum 2.5#. Those little things have an alarmingly short useful life once you pull the lever!
For those who had never had any rudimentary training in civilian or military life, it was great. A great refresher for the rest of us, too!
Our club has done this hands-on class once since, and once the pandemic abates some more we will schedule it again. Those fire fighters are really supportive of boaters knowing what to do and having "fire suppression" gear aboard!
Anyhow, if you can find or create a class opportunity like this, go for it!
(As a surveyor has told me, a sinking boat often takes 15 minutes or more to go down, but discovery of a fire on board reduces your effective response time - often - to seconds.)