Ship Photos of the Day – MAN’s New Alpha Kappel Fixed Pitch Propeller

The 58,500 DWT Supramax bulk carriers Elsabeth C and Mirela show off their shiny new MAN Alpha Kappel fixed pitch propellers, marking the first commercial application for the new MAN Diesel & Turbo's propellers. The ships are owned by Frontmarine Co., an affiliated and managed company of Lemissoler Navigation. Lemissoler reports that sea trials have shown that the new … [Read more...]

First Carbon Fiber Main Propeller Installed On a Merchant Ship

Classification society ClassNK and Nakashima Propeller Co. this week announced the world’s first installation of a carbon fiber reinforced plastic (CFRP) propeller on the main propulsion system of a merchant vessel. The CFRP propeller, which was manufactured by Nakashima Propeller, was installed in May on the Taiko Maru, a domestic 499 GT chemical tanker owned by Sowa Kaiun … [Read more...]

What Are Adjustable Bolted Propellers?

An adjustable bolted propeller, like the one pictured above for Britain's new QE-class aircraft carrier, feature fixed-pitch blades which are installed on the hub after machining, as compared to the entire propeller being machined at once. This enables the pitch of the blades to be increased or decreased during yard periods should variations in hull resistance warrant such a … [Read more...]

PHOTOS: Loading the World’s Largest Containership Propeller

The world's largest-diameter containership propeller was loaded onto a ship at the Port of Hamburg this weekend bound for a South Korean shipyard from it's German manufacturer. The five-bladed propeller is believed to be largest-diameter containership propeller in the world, measuring 10.3 meters in diameter and weighing in at 113 tons. The propeller was manufactured by … [Read more...]

SPOTD: 30-Ton Propellers Installed on the Gerald R. Ford

Workers at Huntington Ingalls Industries (NYSE:HII) tension the bolts that will keep the 30-ton bronze propeller affixed to one of the 4 shafts protruding from the hull of the U.S. Navy's nuclear aircraft carrier Gerald R. Ford (CVN 78). The 21-foot propellers were cast and milled of solid bronze by Rolls-Royce at their facility in Pascagoula, Mississippi.   Rolls-Royce … [Read more...]