Use his definition when you need to work in GH and the Feet template units in Rhino.

Rhino and Grasshopper plugins for ship and offshore intact and damaged stability for design, review, and regulatory evaluation

It allows the use of geometries from Rhino to perform seakeeping simulations using the E-SeaFEM. It facilitates the execution of these simulations to non-specialized users.

Simple and quick solution for creating piping systems.

Notilus Piping is a Rhino plugin for 3D piping featuring database integration, pipe library, HVAC routing, and spool drawing automation.

P&ID Schematics Plugin for Rhinoceros

Set of tools to speed up common shipbuilding tasks