I went to public school
in America, and they told us we would have to learn the metric system way back in 1976. Well it didn't really happen like they said. So despite taking several years of algebra, geometry, calc and trig I'm not so good at that math thing anymore. What I can tell you is we have a fleet of boats painted every year that currently include four Helia's a Orana
a Salina four Lipari's a Mahe and a Saba
. For a boat that size I would plan on four to five gallons of paint, which is 15 to 19 liters of paint.