Load Line

The Load Line below which the vessel may not submerge, varies with the waters and areas through which she passes.

Load Line

TF: Tropical Fresh Water.

F: Fresh Water.

T: Tropical.

S: Together with horizontal line thorough circle:
    Summer Salt Water Load Line.

W: Winter Salt Water Load Line

WNA: Winter loading for vessels crossing the North Atlantic that are less than 330ft. In length.