Illustration of Plimsoll mark
- TF tropical freshwater mark
- F freshwater mark
- T tropical load line
- S summer load line
- W winter load line
- WNA winter North Atlantic load line
Plimsoll mark
noun
: a load line or a set of load-line markings on an oceangoing cargo ship
called also Plimsoll line
Cite this Entry
“Plimsoll mark.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Plimsoll%20mark. Accessed 12 Jul. 2025.
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