Seatorque Boost for Brazil’s Biggest Superyacht

By Maritime Reporter & Engineering News
Monday, December 23, 2013

Brazilian superyacht builder MCP Yachts credited Seatorque Control Systems for contributing to the outstanding performance of its latest launch – the Hemisphere 140 Raffaella II. Incorporating Seatorque’s enclosed drive shaft system, the 43m aluminum vessel, powered by twin Caterpillar C32 1825 HP engines, achieved a top cruising speed of 22 knots during sea trials with an 85% load and 167 metric tons displacement, said MCP president Manoel Chaves. The vessel features a pair M3-400 single-piece Seatorque shaft systems, each 22 ft. long, accommodating the vessel’s four-inch diameter shafts.
“The vessel’s light weight, propeller design and shaft system all add together to make a huge difference,” said Chavez. “In all my years on the water, I have never witnessed a vessel this size with a comparable power package to cruise at this speed. Thanks to Seatorque’s enclosed shaft system, the vessel achieved maximum horsepower, experienced zero shaft noise and vibration, and produced very little wake.”
Launched in July, Raffaella II is the largest yacht built in Brazil to date and reportedly the largest aluminum yacht ever built in South America. The vessel was designed by MCP in collaboration with Vripack and built at the MCP shipyard in Guarujá . It is the third vessel built by MCP Yachts to include the Seatorque Enclosed Shaft System.
According to Seatorque executive vice president Jana Stolper, the Seatorque Enclosed Shaft System is growing in popularity among superyacht builders, as evidenced by the 2012 installation on the highly-acclaimed McConaghy Yachts Adastra, designed by John Shuttleworth. This futuristic 140-foot trimaran, powered by a single Caterpillar 1,000 HP C18 engine, features an Seatorque ST-300, 32-foot, one-piece enclosed shaft system.
The Seatorque Enclosed Shaft System is a self-contained, oil filled, shaft and thrust bearing assembly designed for yachts of all sizes. The system is supplied as a single unit from the propeller end to the engine input coupling accommodating any length shaft and diameters up to seven inches. Operating as a self-contained unit, the Seatorque system allows propeller thrust to be fielded by internal bearings and delivered through the shaft’s mounting system supported by the structure of the vessel, rather than the vessel’s engines and isolators. This reduces vibration and noise and increase the life expectancy of the engines and transmission mounts. The Seatorque system connects the shaft to the engine using flexible universal joint assemblies. This eliminates leaking stuffing boxes, seals, cutlass bearings and associated shaft wear. The use of universal joint assemblies also eliminates damaging engine-to-shaft misalignment and reduces installation and alignment time by more than half. The elimination of cutlass bearings and stuffing boxes results in an average eight percent increase in horsepower, allowing for greater fuel economy and range. In addition, water flow is undisturbed by the non-rotating casing of the shaft assembly, allowing clean water flow to the propeller. This translates into an increase of thrust arc around the propeller, contributing to the efficiency of horsepower delivery. “The Seatorque system replaces the traditional multiple-component shaft system with a single piece of equipment that is simple to install and improves the performance and efficiency of any vessel, while greatly reducing shaft noise and vibration,” said Stolper. “These are very important benefits for yacht owners, especially those accustomed to long-range travel.”
www.seatorque.com
 

The MCP Hemisphere 140 Raffaella II is the largest yacht built in Brazil to date and the largest aluminum yacht ever constructed in South America. Powered by twin Caterpillar C32 1825 HP engines, Raffaella II achieved a top cruising speed of 22 knots during sea trials producing a minimal wake. The Seatorque Enclosed Shaft System is a self-contained, oil-filled shaft and thrust bearing assembly designed to increase horsepower, fuel economy and engine life while minimizing shaft noise and vibration. The system is supplied as a single unit from the propeller end to the engine input coupling accommodating any length shaft and diameters up to seven inches.
 

(As published in the November 2013 edition of Maritime Reporter & Engineering News - www.marinelink.com)

Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

First Libra Offshore Oil Well Confirms Discovery

Libra consortium reports that drilling the first well in the area extension of Libra, the 3-BRSA-1255-RJS (3-RJS-731), confirmed the discovery of good quality

Maersk Interceptor Named in Norway

In a ceremony held at GMC Marine Partners yard in Mekjarvik in Norway, Mrs. Anita Utseth, Senior Vice President in Det norske oljeselskab ASA (Det norske) had

Aquarius MAS with Marine Solar Power Installed on Delos

Eco Marine Power together with strategic partners has installed an Aquarius Management & Automation System (MAS) integrated with a marine solar panel array on-board the Blue Star 'Delos'.

Marine Power

Monitoring U.S. Troops Returning from Ebola Mission

Secretary Hagel has signed an order that validated a recommendation from the Joint Chiefs of Staff to place all U.S. military service members returning from

Korean Register to Drive LNG Fuelled Shipping

Korean Register (KR) will work alongside the Asia-Pacific Economic Cooperation Secretariat (APEC) to promote the use of LNG fuelled ships in the APEC region. APEC

Goltens Opens Houston Service Facility

Goltens Worldwide today announced the opening of its new full service facility located within two miles from the Port of Houston. Following months of planning and machinery and equipment installation,

Marine Equipment

Maersk Interceptor Named in Norway

In a ceremony held at GMC Marine Partners yard in Mekjarvik in Norway, Mrs. Anita Utseth, Senior Vice President in Det norske oljeselskab ASA (Det norske) had

Fincantieri & Vittoria Shipyard Join Forces

During the 24th edition of Euronaval, the most prestigious event in the world for naval defense, Fincantieri, one of the major shipbuilding groups worldwide, and Vittoria Shipyard,

Aquarius MAS with Marine Solar Power Installed on Delos

Eco Marine Power together with strategic partners has installed an Aquarius Management & Automation System (MAS) integrated with a marine solar panel array on-board the Blue Star 'Delos'.

Vessels

Maersk Interceptor Named in Norway

In a ceremony held at GMC Marine Partners yard in Mekjarvik in Norway, Mrs. Anita Utseth, Senior Vice President in Det norske oljeselskab ASA (Det norske) had

Eurodam Tops in USPH Inspections

Holland America Line’s ms Eurodam achieved a perfect score of 100 on a recent routine United States Public Health (USPH) inspection conducted by the U.S. Centers for Disease Control and Prevention.

Fincantieri & Vittoria Shipyard Join Forces

During the 24th edition of Euronaval, the most prestigious event in the world for naval defense, Fincantieri, one of the major shipbuilding groups worldwide, and Vittoria Shipyard,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Pipelines Pod Propulsion Ship Simulators Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2470 sec (4 req/sec)