if sailor weights in Singapore are "typically light" are those of NW Europe, ah, typically heavy?
I'm afraid so. North-West European people are also the tallest in the world. Guys under 30 overhere are on average 1.90 mtr tall (6 ft 3 inches), Typicall bodyweights associated with that length are 75-90 kg.
Of course there are exceptions, but generally speaking this is the way the playing field has been layed down/