—Color Brochure Available— West Germany-based Markisches Werk Halver (MWH) has more than 50 years' experience in the design and production of high-quality inlet and exhaust valves. MWH offers a complete range of valves, valve cages, valve rotators, accessories and complete exhaust valve assemblies for diesel engines in ship propulsion and generator applications.
Two characteristics of the company's products are high quality and precision manufacturing, both of which result in a longer service life, lower maintenance costs and higher profitability for MWH customers.
Specially designed modifications and general improvements are constantly introduced by MWH engineers in an effort to increase costeffectiveness for the company's customers.
Examples of this, according to MWH, are its improvements in the area of cylinder heads for gas engines and in its development of Nimonic valves.
MWH reports that its bi-metal Nimonic valves have proven to be the best solution for heavy fuel operation use because they show better resistance against corrosion and high material strength at high temperatures.
MWH Nimonic valves have already been in use for over 20,000 running hours.
To protect against corrosion, MWH valves are chromed, nitrided, coated with Molybdenum or other special alloys. The company has developed special techniques to polish the valves so as to take account of all the special forces and gas flows to which the valves are exposed during operation.
Markisches Werk maintains strict manufacturing and production controls to ensure the quality of its products. These controls begin with the receipt of the raw materials.
Each shipment is checked against the requested nominal values. In case where these values are not achieved, the shipment is rejected.
During the manufacturing process, each worker checks and controls his own work. MWH reports that this system has proven to be a highly successful practice for maintaining quality standards.
In addition, MWH's modern process equipment ensures a quality product. Each piece is checked 100 percent before it is packed for shipment.
This checking includes, of course, crack testing by fluorescent penetrants.
Quality assurance is the direct responsibility of senior management as well as line management. This ensures tight control and underlines the importance given to quality assurance at MWH.
The company's new laser marking machine protects against imitation and also reduces cost.
MWH also has developed watercooled exhaust valve cages. The cooling water flows a few millimeters from the valve seat, substantially reducing temperature. Consequently, the service life of the valve spindle and valve cage are increased.
Another area where MWH's precision engineering is of particular importance is in the supply of complete valve assemblies. All components are specifically made to achieve the best match possible.
The company also offers a new valve cage reconditioning service.
The valve cages are first checked in order to determine if the repair is economically viable. Repair work is carried out at the company's facilities.
MWH can also supply reconditioned cages on an exchange basis.
For free color literature detailing the complete line of valves, valve cages, valve assemblies, etc., offered by MWH, C i r c l e 7 7 o n R e a d e r S e r v i c e C a rd
Camar Corporation of Worcester, Mass., has developed a series of blowers designed specifically for shipboard inlet gas systems. The design and manufacture of these blowers is of American origin. Because of the highly corrosive atmosphere produced by flue gas, scrubbed with seawater, and the high
on one shaft and in one casing. It is this turbine that is most affected by the thermal transients of maneuvering due to variations in the inlet steam temperature to the IP section of the turbine when the reheater is secured and when it is returned to service. A rationale is provided for
On June 24,1994 the USCG published a notice to inform the public that the alternative voluntary advisory group for Cook Inlet, Alaska has been recertified (59 FR 32745). This certification was effective June 1,1994 and terminates May 31,1995. Certification allows the advisory group to monitor
of various components within the project. Generally these are: the gas gathering system at the gas field; a gas pipeline across the Island to Bridport Inlet adjacent to Viscount Melville Sound; the facilities at Bridport Inlet which include the gas liquefaction (or process) barge, the storage barges and
, "Concrete Barges—A Floating Breakwater." The concept of a sloping-float breakwater was developed in response to conditions present at the Oregon Inlet offshore North Carolina, though it can be applied to many locations and situations. A great deal of sand transported down the coast tends to block
four projects were in the pre-filing stage. The eight preliminary permits include two projects in the Niagara River; three in Alaska (Kvichak River, Cook Inlet, and the Gulf of Alaska); two in Morro Bay, CA; and one in Ft. Pierce Inlet, FL. The fully licensed projects include Verdant Power’s tidal project
four projects were in the pre-filing stage. The eight preliminary permits include two projects in the Niagara River; three in Alaska (Kvichak River, Cook Inlet, and the Gulf of Alaska); two in Morro Bay, CA; and one in Ft. Pierce Inlet, FL. The fully licensed projects include Verdant Power’s tidal project
an impact. Brian Stanton, North America Engineering Lead at Parker Hannifin's Gas Turbine Division, talks about the extensive testing required for inlet filtration systems used on these ships.Inlet filtration used for critical ship systems, such as on the propulsion gas turbines, must pass rigorous
as the others that support them, are hoping that the new dredge will be an answer to the significant shoaling issues that have plagued various channels and inlets throughout Dare County. “There’s about 1.2 million cubic yards of sand that move across the inlet every year, and removal of it is paramount
to assure sensitive, accurate control of outlet pressures: from 2 inches to 18 inches of water, 0 to 6 psi, 0 to 20 psi, 0 to 40 psi and 0 to 60 psi. Inlet pressures are to 3,000 psi. It can also be supplied for back pressure regulation for inlet pressures to 60 psi. Flow capacity is Cv = .001; ESEOD
with the current largest Kamewa size of 6.5 ft. (2 m) The VLW J235 is divided into a series of elements. Integrated into the hull structure is the inlet duct. To this and to the transom is bolted the impeller chamber. Outboard of this is the guide vane chamber and the steering and reversing unit,
that rely on gravity ballasting, which excludes The design and component layout of the owner had minimal valuable off-hire any BWMS requiring an inlet press (e.g., the hybrid system offer further bene? ts time. for ? ltration). Our EcoOne system can by utilizing key attributes such as ballast
a small buf- ing either manual or automated con- to ships, resident vehicles to ports fer tank, and then the fuel cell pulls off nection to the vehicle inlet, and pro- and harbors and vehicles to establish that buffer tank as needed,” Schluter viding up to 3MW charging power service providers on a monthly
part- and operation of a new split-hull dredge that could be used nership with Dare County, has recently taken mostly in maintaining Oregon Inlet, as well as in Hatteras EJE delivery of a new shallow-draft hopper dredge on the Outer Inlet and other state waterways. Funding for the project
of testing in Vancouver’s Developing a hydrogen powered AUV has also been a goal for Canada’s Cellula Robotics – and this summer it got its Indian Arm Inlet, including trailing deployment of two, 70cm- long (including antenna) micro-AUVs from the Solus-LR system into the water. Its goal is to get to 2
it will be mounted onboard, with hammer strikes at three different heights at up to Summary three orientations. Vibration and shock testing is vital for inlet ? ltration sys- Medium shock testing uses a bigger hammer with more tems as these are essential to ensure reliable operation and height options
an impact. Brian Stanton, North America Engineering Lead at Parker Hanni? n Gas Turbine Division, talks about the extensive testing required for inlet ? ltration systems used on these ships. By Brian Stanton, North America Engineering Lead at Parker Hanni? n Gas Turbine Division nlet ? ltration
and necessary charging in- U.S. shipyards in the “green” realm is frastructure to carry passengers across lique? ed natural gas (LNG) bunker- Sinclair Inlet, between Port Orchard ing barges like the one currently under and Bremerton. construction at Fincantieri Bay Ship- building for Crowley. Set to be
in more frequent and severe storm damages.” ysis showed that beaches that had previously received sand Recently, the work began on The Fire Island Inlet to Mon- placement and dune construction sustained less damages and tauk Point, New York, Coastal Storm Risk Management Proj- saved an estimated $1
sand from federal naviga- dredged from several federal channels including Fire Island tion channels and placing the sand on the barrier island to Inlet and shoals and Moriches & Shinnecock Inlets and shoals. build the island back up. Homeowners will be able to decide if Ocean dredges gather sand
, espe- cially with Sandy, that a more compre- hensive long-term project was needed for the entire region. The project would become The Fire Island Inlet to Mon- tauk Point, New York, Coastal Storm Risk Management Project. The project was created by the Army Corps in col- laboration with numerous agencies
coastal engineer with the agencies and communities revitalized a stalled project – The U.S. Army Corps of Engineers, New York District, was Fire Island Inlet to Montauk Point, New York, Coastal Storm walking with a colleague and a coastal researcher around Risk Management Project. Westhampton Beach, a
in more frequent and severe storm damages.” ysis showed that beaches that had previously received sand Recently, the work began on The Fire Island Inlet to Mon- placement and dune construction sustained less damages and tauk Point, New York, Coastal Storm Risk Management Proj- saved an estimated $1
sand from federal naviga- dredged from several federal channels including Fire Island tion channels and placing the sand on the barrier island to Inlet and shoals and Moriches & Shinnecock Inlets and shoals. build the island back up. Homeowners will be able to decide if Ocean dredges gather sand
, espe- cially with Sandy, that a more compre- hensive long-term project was needed for the entire region. The project would become The Fire Island Inlet to Mon- tauk Point, New York, Coastal Storm Risk Management Project. The project was created by the Army Corps in col- laboration with numerous agencies
coastal engineer with the agencies and communities revitalized a stalled project – The U.S. Army Corps of Engineers, New York District, was Fire Island Inlet to Montauk Point, New York, Coastal Storm walking with a colleague and a coastal researcher around Risk Management Project. Westhampton Beach, a
photo by Mass Communication Specialist 1st Class Nathan Carpenter USCGC Smilax (WLIC-315), the oldest active Coast Guard cutter, travels through Hatteras Inlet. The inland construction tender turned 75 in 2018. U.S. Coast Guard photo www.marinelink.com 29 MR #6 (18-33).indd 29 6/3/2021 4:43:02 P
Pate’s work with the Eco on the inlet has revealed some of the secrets to the manta rays’ particularly hazardous habi- tat choice. Not only did she quantify the speed of the fast-moving current, but she also uncovered how the current var- ies throughout the inlet’s shallow water column, with tide
the imals are using some places groups of up to six manta rays sitting in ? ow she needed to be able to measure and not others is crucial to the inlet for hours at a time. them. However, the costs of purchas- Uminimizing our impact on ing an ADCP quickly became a major them. Recently, the new
CASE STUDY ADCPs A manta ray swims through the inlet. (Photo credit: Bryant Turffs) STUDYING THE SECRETS OF MANTA RAY BEHAVIOR WITH A NEW MINI ADCP 10 March/April 2021 MTR #3 (1-17).indd 10 3/22/2021 5:55:02 PM
energy in the BOEM’s Outer Continental Shelf (OCS) Oil and Gas United States. Let’s dig in. Program for 2017-2022 also included a lease sale in the Cook Inlet Planning Area, which was scheduled for 2021. On January 15, BOEM released a draft Environmental Executive Order appetizers Impact Statement (EIS)
apparent that niche dergo a complete failure with obstructed eas are dif? cult to coat, also special at- areas are a particular challenge for the water inlets in the hull. tention should be spent for the surface shipping industry and are a collective Niche areas represent a particular preparation and
. work entails deliveries of fuel and heavy equipment to lo- The new North Arm tug is being ? tted with a pair of Veth cals with water only access in the inlets and on the islands Z-drives. This will make the boat capable of assisting with of the B.C. coast. ship handling, but importantly, it will also be
of experience spans every sector of the marine industry. When Kitsap Transit wanted a modern and e?cient passenger vessel to serve Puget Sound's Sinclair Inlet, they turned to Glosten. The result was the design of the ?rst hybrid electric passenger ferry in Puget Sound. At Glosten, we do more than design
shipyard. The frst two developed as research both full electric applications and Hybrid systems grows vessels working in Long Island Sound and Rockaway inlet. each day in number and in total kWh power. We have seen The third in the series is the frst U.S. built Hybrid cargo over 16 U.S. information requests