993 pages of information about boating and Dredges

Advertisements>

Updated Fishing Site for 2,550 pages and 18,000 links to fish, fishing guides and where and how to fish

Easy Fish Recipes Over 1,000+ easy, delicious fish recipes

Dredges
Bookmark this valuable site

Thank you for visiting Dredges. Please scroll down to learn more.

Gahagan Bryant, Assoc. They provide consulting services in coastal and dredging engineering, and their related disciplines. Their staff has managed projects from the Dubai Harbor to the Houston Ship Channel. GBA is an outgrowth of the Gahagan Dredging Company organized in 1895. Their hands on innovative approach continues to be the strength of its contracting and consulting services. Click on the picture to learn more.

Editors note:


Dredges are truly modern marvels. Without them our harbors would silt up, no boat could pass and there would be no trade. Dredges use the sand from the harbor bottoms to build airports (JFK and Logan), harbors (Dubai, Port Elizabeth, Houston), beaches (Jones Beach), barrier reefs (like the ones that protect Venice), Parks and even the Saturn Moon Base.

In addition, they keep our rivers flowing by cutting through "S" curves and lessen the chances of flooding. They build dykes that preserve peoples homes and farms. Dredges are truly "Modern Marvels".

Ask and Dutchman about the importance of dredges for half of the Netherlands is built on dredged land, protected dredge created dykes that keep out the sea. Why wasn't the money authorized for the Corp of Engineers to build the dykes to protect New Orleans and the Gulf Coast from Katrinka? Ask President Bush. He had other priorities.

There are essentially four different kinds of dredges:



1. ClamShell Dredge
   This dredge works with two large interconnected "clamshells". They are dropped into the bottom open. The two shells are then closed by the operator and the sand, mud or gravel between the closing shells is scooped up and the lifted to the surface and put into a barge or container ship for transporting to the area to be filled or dyked.

   

2. Dipper Dredge
   A Dipper (or Bucket) dredge is essentially a diesel-electric shovel on a barge with a long arm that can reach below the surface of the water and scoop up the sediment below. The material is then lifted to the surface, dropped into an open barge for transporting to a fill area.

   

3. Hydraulic Dredge
   These dredges contain a huge hydraulic pump connected to a pipe that is lowered to the bottom. The end of the pipe has a large revolving cutter blade the breaks up the sediment on the bottom and allows it to be sucked through the dredge and out a pipeline into a fill area. Some hydraulic dredges are so huge they can dig harbors and channels 100 feet deep and move mud and dirt almost 4 miles.

   

4. Hopper Dredge
   Hopper Dredges are self-contained vessels. The ship has an onboard digging mechanism, usually hydraulic and the holding tanks for the dredged material. Once the holds are filled, the dredge moves to the fill area, opens the bottom of the hold and deposits the fill. Then it returns to the digging area for another load.

• Advanced Marine
  Specializing in the sale of new and used dredges, water management machinery, weed harvesters and related equipment

• American Marine and Machinery Company
  Manufacturer of dredges, equipment and parts

• Armadillo Mining Shop
  Sells small scale mining equipment like dredges, gold pans and sluice boxes

• Anderson Dredging
  International dredging and hydraulic land reclamation consulting firm.

• Anthony D. Bates Partnership
  Dredging and coastal consulting engineers for land reclamation, marina construction, and dock formation projects.

• Central Dredging Association
  An independent, non-profit, non-governmental, professional society for the dredging industry serving Europe, Africa and the Middle-East.

• Dredge America
  Dredges marinas, boat slips, boat basins, lakes, navigation channels, ponds, lagoons, and sand using portable, hydraulic dredges.

• DredgeJobs
  Medium for recruitment within the dredging industry, providing a chance for human resources departments and job seekers to use dredging news online to promote their vacancies and resumes.

• Dredging International
  Capital and maintenance dredging, land reclamation and port construction company affiliated with the DEME Group.

• Dredge Brokers LLC
  Brokers of marine dredges, workboats, barges, pumps, boosters, components, and support equipment. Offers free listings

• Dredging Specialists
  Provides dredging services, consulting, custom dredges

• Dutch Dredging
  Dredging company in The Netherlands with 18 ships.

• Ellicott
  Dredge manufacturer. Dredges range in size from 10"-36", for mining, sand & gravel dredging, beach restoration, environmental remediation, irrigation canals, channel maintenance, marina construction, land reclamation

• Gahagan & Bryan Assoc.
  Specialists with expertise in Dredging and Dredged material handling, Coastal Engineering, Environmental Restoration, Hydrographic Surveying and Marine Engineering

• Twinkle Co
  Manufactures sand and gravel dredges, winches, cutters, and accessory products. Includes product specifications, product sheets (PDF format) and FAQs

• Great Lakes Dredge & Dock Company
  Dredging contractor with a fleet of hydraulic cutterhead, clamshell, backhoe, trailing suction hopper dredges, drillboats and attendant plant. The company maintains marine yards in six locations

• Inner Space Dredging Services, Inc.
  Dredging and marine contractor specializing in hydraulic, mechanical and environmental dredging.

• International Association of Dredging Companies
  120-member organization for contractors in the private dredging sector.

• International Dredging Review
  A trade journal for the dredging industry, reporting on the full spectrum of events and issues in the industry.

• Jan De Nul N.V.
  International contractor specializing in dredging, land reclamation, heavy lifting, offshore and environmental services.

• Javeler Dredging
  Hydraulic dredging contractor and equipment company.

• Keene Engineering
  Manufactures a range of reclamation, diamond and gold dredges

• Liquid Waste Technology
  Manufacturer of the PitHog dredge and other dredges and pumps.

• Marine International Dragage
  A Canadian company specializing in marine dredging of port basins, access channels, navigation channels, inland waterways, and lakes. Site is in English and French.

• Michigan Hydraulic Dredging
  Over-the-road dredging company for small marinas, trout ponds, lake restorations and similar industrial projects.

• Mini Dredging Pty Ltd
  Custom built dredges designed to solve mining, industrial, agricultural and environmental problems. Company history, services, expertise and contact details

• Netherlands Dredging & Channels Ltd.
  Execution of dredging works using trailing suction hopper dredgers. Provision of hydro-graphic surveys, project management, and consultancy.

• OCI Engineering Sdn Bhd
  Engaged in consultancy, design, supply and construction of alluvial dredges and mining plants.

• Pearce Pump South, Inc.
  Dredging and mining equipment including pumps, crushers, dredges, and processing tools

• Petremex
  Specialists in marine dredging and the production of aggregate, gravel and sand. Based in Mexico.

• Promack Treasure Hunting
  Sells equipment for prospecting such as dredges, pans, sluice boxes, gold recovery machines, metal detectors and books

• Rohde Nielsen A/S
  Specialist in capital and maintenance dredging, land reclamation and coastal defence such as beach nourishment.

• Rohr Corporation
  Manufacturer of dredges and large scale processing equipment for sand and gravel

• Royal Boskalis Westminster nv
  Operates worldwide for the construction and maintenance of harbours andwaterways, land reclamation, and coastal defences, and riverbank protection.

• Twinkle Co
  Manufactures sand and gravel dredges, winches, cutters, and accessory products. Includes product specifications, product sheets (PDF format) and FAQs

• United Dredging Corporation
  Offers dredging, mining and engineering services world wide for land & beach reclamation and development, mineral mining and siltation dredging. Specializing in the Caribbean.

• Western Dredging Association
  Promotes the exchange of knowledge in fields related to dredging, navigation, marine engineering and construction.



This link takes you to our Index where you can choose from 1,993 pages of Sail and Power Boating Charters, Boat Makers, Equipment, Accessories, Pictures, Naval and Marine History, Fishing and Fish Info and Recipes and other Educational Information