Lips Designs Detachable Blade Propellers For Amoco

Amoco's tug Michigan, operating through the winter in Lake Michigan last year, experienced damage to its stainless monobloc propellers necessitating unscheduled drydocking of the vessel twice and the installation of a spare propeller.

Lips Propellers was approached as to the feasibility of designing a detachable blade propeller with comparable strength and a hub geometry no larger than the original monobloc propellers. Lips responded with a four-blade design which combined the efficiencies of the original monobloc design with the advantages of a detachable blade propeller.

Spare blades can easily be stored aboard the vessel or easily shipped, even by air, allowing prompt replacement when damage is sustained.

The vessel does not need to be drydocked, and the removal and replacement of blades can be accomplished with lighter lifting equipment. Only damaged blades need to be removed and repair of damaged blades can be expedited due to the ease of shipment and handling.

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Maritime Reporter Magazine, page 7,  Mar 1986

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.