The load lines and deck line must be painted in white or yellow on a dark background or black on a light background. All lines are 25 mm thick. Their upper edges mark the level at which they refer.
LR Lloyds Register, Classification Society.
TF Tropical Fresh
F Fresh
T Tropical
S Summer Loadline Draught
W Winter
WNA Winter North Atlantic
image credit: SEAMANSHIP TECHNIQUES by D. J. HOUSE