1·The boat is heavier for its size (usually an issue only when trailering)
同样尺寸的船只,若使用固定龙骨,重量会更大(只在用拖车拖船时才算是个问题)
2·This water can then be emptied when the boat is put on a trailer, to make it lighter for easier trailering.
当船被放在拖车上时,这些水可以被放掉,让船更轻,便于拖载。