Apparatus for mounting and dismounting a submerged propeller unit for a floating body

Abstract

Apparatus for mounting and dismounting a submerged propeller unit to and from the hull of a floating body from the outside thereof comprises a flange in the hull surrounding an opening therein and having passages therein, a flange on the propeller unit having fastening means corresponding to the passages in the hull flange, a drive coupling member on the propeller unit adapted to extend through the hull opening when the propeller unit flange is secured to the hull flange, guides on the propeller unit for guiding the coupling member into the hull opening and for positioning the propeller unit flange with its fastening threaded bores in registry with the passages in the hull flange as the propeller unit is raised to assembled position with its flange against the hull fange, a removable watertight chamber formed in the hull and communicating with the opening therein, cables extending through watertight ways in the hull and adapted to be secured detachably to the propeller unit to raise the same to bring the propeller unit flange to the level of the hull flange with the fastening threaded bores in the former in registry with the passages in the latter, and mechanism operable from outside said watertight chamber and extending therethrough for installing fastenings cooperating with said propeller unit flange fastenings and with said passages to secure said propeller unit flange to the hull flange.

Dependencies are inferred from the claim text.