Belgian boat lift.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...r_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...t_elevator.jpg
Previously:
https://www.homemadetools.net/forum/...115#post112537
https://www.homemadetools.net/forum/...340#post158142
https://www.homemadetools.net/forum/...366#post127012
https://www.homemadetools.net/forum/...3281#post77777
https://www.homemadetools.net/forum/...220#post161319