Waterline

usgb/ðə ˈwɔːtərlaɪn/
noun

The line where the surface of the water meets a ship, wall, etc.

The ship was loaded until it was down to the waterline.
Visual representation of "waterline" - The line where the surface of the water meets a ship, wall, etc.

Often appears as...

  • above the waterline
  • below the waterline
Definition 1 of 3
Visual representation of "waterline"
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Load Indicator

On ships, 'waterline' indicates how heavily a vessel is loaded.

Illustration for Load Indicator
The cargo was heavy, bringing the ship closer to the waterline.
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Safety Marker

Below the waterline is critical for ships as breaching it can threaten buoyancy.

Illustration for Safety Marker
During the inspection, they ensured no holes were below the waterline.
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Structural Boundary

The waterline separates the underwater hull from the above-water superstructure.

Illustration for Structural Boundary
The waterline is clearly visible, differentiating the red hull from the white deck.
Visual representation of the word "Waterline"

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