I want a new idea for design a Gangway to move from berth to tugboat or else from one tugboat to another. Can you suggest new ideas for it?

Answers

Starrysky

Rollup one like the bridge design in London https://en.wikipedia.org/wiki/The_Rolling_Bridge https://www.youtube.com/watch?v=x0Dj7XA77hw Gas cylinders extend pistons to roll up the bridge.