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US 2018/0009519 A1Published application
Arrangement and method for installing propulsion unit
AssigneeABB Schweiz AG
InventorsJani Hakala, Kimmo Kokkila, Petri Säkkinen
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AssigneeABB Schweiz AG
InventorsJani Hakala, Kimmo Kokkila, Petri Säkkinen
Estimating the term…
An arrangement and a method for installing a propulsion unit to a hull of a ship. The propulsion unit comprises an upper part of the propulsion unit attachable to the hull of the ship and a lower part of the propulsion unit where to a propeller shaft is rotatably supported, and the upper part of the propulsion unit having flanges to attach the flanges tightly to the hull, and wherein there is an aperture in bottom of hull where to the propulsion unit is to be installed. The arrangement comprises a plurality of watertight covers covering openings in the bottom of hull and a plurality of watertight covers covering openings in the top of the upper part of the propulsion unit, wherein the arrangement comprises a removable hull-side cover covering at least the opening under it, and at least one removable propulsion unit side cover covering the opening under it and facing the opening, and the removable covers are bolted from the hull-side.
An arrangement for installing a propulsion unit to a hull of a ship, wherein the propulsion unit comprises an upper part of the propulsion unit attachable to the hull of the ship and a lower part of the propulsion unit where to a propeller shaft is rotatably supported, and the upper part of the propulsion unit having flanges to attach the flanges tightly to the hull, and wherein there is an aperture in bottom of the hull where to the propulsion unit is to be installed, wherein that the arrangement comprises a frame plate with openings attached to the hull to cover the aperture, a plurality of watertight covers covering openings in the frame plate and a plurality of watertight covers attachable to the top of the upper part of the propulsion unit to cover an opening on the top of the upper part of the propulsion unit, wherein the arrangement comprises a removable hull-side cover covering at least one opening in the frame plate under it, and at least one removable cover attachable to the propulsion unit covering one opening under it and facing the opening in the frame, and wherein the removable covers are bolted from the hull-side.
A method for installing a propulsion unit to a hull of a ship, wherein the propulsion unit comprises an upper part of the propulsion unit attachable to the hull of the ship and a lower part of the propulsion unit where to a propeller shaft is rotatably supported, and the upper part of the propulsion unit having flanges to attach the flanges tightly to the hull, and wherein there is an aperture in bottom of hull where to the propulsion unit is to be installed, wherein the method comprises a step of attaching a frame plate with openings to the hull to cover the aperture, steps of installing a plurality of watertight covers covering openings in the frame plate and of installing a plurality of watertight covers covering an opening on the top of the upper part of the propulsion unit, wherein at least one removable hull-side cover covering at least one opening in the frame is faced to at least one removable propulsion unit side cover covering the opening under it, and wherein the removable covers are bolted from the hull-side.
Dependencies are inferred from the claim text.