Wärtsilä said its new inline scrubber system offers a number of “notable benefits” over conventional exhaust gas cleaning systems. Already with several ships in line for installation, the company says its new product, saves space, lowers cost and eases installation.Important for all vessels, but particularly for smaller vessels and retrofit projects, space is of chief concern when considering engine room configuration. Add after-treatment products such as scrubber systems into the mix, and space becomes an even greater priority.Sigurd Jenssen, Director, Exhaust Gas Cleaning, Wärtsilä Ship Power, said, “Space availability is a challenge that makes it difficult for many vessels to have exhaust gas cleaning systems installed.” That’s why Wärtsilä has placed a great deal of emphasis on compactness when designing its new inline scrubber system, which was engineered to conserve considerable (and precious) space. The company said thi... [More]
Ships with Wärtsilä’s Airguard and Oceanguard propellor shaft seals have no need to change from mineral oil to a bio-degradable lubricant (formally ‘an Environmentally Acceptable Lubricant’) when they're in U.S. waters as these seals meet Vessel General Permit (VGP) requirements. How these particular propeller shaft seals comply, and more about these newish VGP amended regulations follows:Seals,bearings and stern tube arrangement: Image courtesy of WärtsiläNo oil-to-sea interfaceWärtsilä explain that Airguard is suited for merchant ship stern tube and thrusters, and Oceanguard for cruise, ferry and offshore stern tube, thruster and electric pod face type sealing. The Airguard and Oceanguard sealing systems have been designed with no oil-to-sea interface (the essential point): an air chamber or separation space within the seal captures any water or oil leakage, which is then transferred to inboard tanks for monitoring and further tre... [More]
Tags: Wärtsilä, propeller shaft seals, lubirication, Oceanguard, Airguard, merchant ships, ferries, cruise liners, offhore vessels, US Vessel general permit, vgp
Brazil World Cup 2014 and Olympics 2016 visitors will be able to sail between venues on a fleet of seven big new 2000-seat fast ferry catamarans designed for the job by Holland’s CoCo Yachts and to be built for Rio de Janeiro State by the Afai Southern Shipyard in China. Henk van Herwijnen, General Manager of CoCo Yachts says that the ferrys between Rio de Janeiro and Niterói are expected to carry 100,000 passengers every day, increasing to 150,000 during the international sports events.
Rio de Janeiro Ferry: Rendering courtesy of CoCo Yachts
People-moving on this scale demands a well-proven propulsion system that for the sake of the passengers is relatively noise-free, provides precision manoeuvrability, and takes up as little space in the fitting as possible. Veth Propulsion (also of Holland) came closest to meeting these demands at the right price and landed a contract to deliver four counter-rotating Z-drives, type VZ-700-CR (700 kW/1800 rpm) for each of the new ... [More]
Offshore vessels, tugboats and ferries all have a common need – to turn in their own length, even move sideways at times – and German propulsion specialist propulsion manufacturer, Schottel, specialises in meeting that need.
'ESVAGT Aurora' (2x SRP 3030 CP): Photo courtesy of Schottel
A company whose corporate roots go way back to 1921 continues to lead through its ongoing investment in R&D, now unveiling a new generation of their larger thruster units with their housings hydro-dynamically optimised using CFD techniques. These new thrusters well-known as SRP (Schottel Rudder Propellers) and STP (Schottel Twin Propellers) are available with a variety of reduction ratios to suit all common input speeds whether diesel engine or electric motor driven, and Schottel add that they are more compact in size than existing thrusters in the range.
Hydraulic clutch drives thruster hydraulic units The new thrusters come with an independent, hydraulically operated m... [More]