Hi Bruno The water powered lift is portable and can be mounted in a couple of positions on the swim platform using the same sockets as the removable rails and swim ladder, we also have a hinged ramp that can land on a floating dock or the bow of the nautica tender that uses these mounts
I too was bitterly disapointed with our Nautica Cat. The worst bit was that the auto-burst-into-flames feature failed in the tender garage on the delivery trip then the auto-front-door-deployment-at-30kts also failed to deploy fully. Don't think I've ever seen so many Germans laugh so much in one place when it was delivered at the yard.
On ours it was cunningly disguised as the battery charger, although it did have a back-up by way of the shore power connection.