Featured Marine Picture #33

Title: Un-assumingly powerful
Date: February 2006
Location: At sea, Gulf of Mexico
Description: Few people ever see these spaces; the engine room of a large passenger ships. This is the port side shaft tunnel of the Rhapsody of the Seas. The propulsion shaft turns up to 147 rpm, transmitting 17 megawatts of power, to one of two, four bladed propeller. Each fix pitch propeller measures 5.4 meters in diameter and weighs 14,718 kg, propelling the ship to a top speed of 23.6 knots.
Credit:  Martin Leduc
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