Mooring Calculator & Mooring Line Setup Guide

MoorSim is an interactive boat mooring simulator designed to help you plan and understand a mooring setup before using it in the real world.

How to set up mooring lines

A good mooring setup depends on the position of the boat, available mooring points, line angles, line length, elasticity, wind direction and expected loads. MoorSim lets you place these elements visually and compare different configurations.

How long should mooring lines be?

There is no single correct mooring line length for every boat. The required length depends on the geometry of the berth, distance to cleats or piles, expected water-level changes, line stretch and the direction of the loads acting on the boat.

Mooring line forces

Changing the angle or elasticity of a mooring line changes how forces are distributed. MoorSim helps you visualize these effects by simulating wind loads and the response of multiple mooring lines together.

Try the MoorSim mooring calculator

Place your boat, docks and mooring points, connect your lines, set the wind conditions and run the simulation. Adjust the setup and compare the results.

Open MoorSim and start designing your mooring setup →

MoorSim is a planning and simulation tool. Results are estimates and should not replace professional judgement, inspection or safe seamanship.