We don't have to have throwables.
We have special rules about sport boats and surf boards and such so we are not weighed down by too much crap.
I sailed in violent weather for 25 years without wearing a life jacket. It is the getting old that has made me get prepared.
I never once, in all of my capsizes felt I needed a life vest.
I know that is not the cleaverset idea..I am just sharing my experience.
Some of my very best memories of summer sailing are big winds, my boat, me and a pair of board shorts.
Now I have VHF PDF Tools Food Drink Tow Line Kitchen Sink.........but no Throwable.......and no kid on the bow......but I think the best thing that could happen to a little boy is be swept off a bow......and realise how the World looks from "off the bow" and how exciting it is to confront more than getting on the bus to go to school....he will be all the better for it.........and his dad will be reminded just how prescious he is.
I do think a speeding catamaraan is no place for a throwable. Even only ten metres is too far to swim with a vest.
All of my visitors on big or small boats are told NOT to swim but to stay afloat and try to be visible so the boat can come back anad get them.
I am not saying anything should or shouldn't be....just that there are many ways of looking at things and fear and insurance companies are not always the most realistic.