Slitherine

basic value (BV) = MANPOWER/10 + 3 x QUALITY + HULL + RAM

equipment pluses (cumulative)
if has engines <--------- BV x 1.15 (+15%)
if has rowers <---------- BV x 1.15 (+15%)
if has fire capability <- BV x 1.25 (+25%)
if has sails <----------- BV x 1.1 (+10%)
if has corvus <---------- BV x 1.1 (+10%)
if has harpax <---------- BV x 1.3 (+30%)
if has firepots <-------- BV x 1.4 (+40%)

captured ships gives 150% of its value
sunk, rammed and consumed in flames gives its full value
inmobilized ships gives 75% of its value
crippled ships 50%

treasure ships double its value (so a captured treasure ship triple its value at the victory points calculation)