🚢 Subsea Cable Lay: Catenary, Touchdown Layback and Top Tension (2D)

Side view of a cable ship paying out a cable that hangs in a curve to the seabed touchdown point, with the laid cable and its slack behind it. Set water depth, cable weight, seabed tension, ship speed, slack and breaking load, and see the layback, the length of cable in the water, the tension at the ship and the safety factor. The catenary is checked against a direct integration of the cable equations, with four in-page numerical checks.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install