What materials are APR grabs made from for underwater use?

Our dredging grabs are engineered using high-strength steels and wear-resistant alloys. Specifically, we utilize HARDOX 500 material to withstand the extreme friction and abrasive nature of underwater sediment.

How do your grab buckets perform in submerged conditions?

APR Bright Industries integrates IP67-rated technology into our grab designs to ensure electrical and mechanical integrity during submerged activities, providing reliable performance in wet conditions.

What kind of after-sales support do you offer for dredging grabs?

APR Grabs offers comprehensive support, including the repair, maintenance, and technical upgrading of all types of dredging grab buckets to ensure long-term operational efficiency at ports.

Ship Grabs for Ports | Underwater Dredging

Q: What exactly is an underwater dredging grab (ship grab)?

An underwater dredging grab is a specialized mechanical or hydraulic bucket designed to load and unload debris, sediment, and heavy materials from underwater environments such as ports, harbors, rivers, and offshore locations.

Ship grabs generally mount on the ship cranes at port for loading and unloading the bulk material. Moreover, grab designs and mechanisms depend upon the material being handled at port with single rope, two rope, four rope, electro-hydraulic, orange peel grabs, timber grabs, dredging grabs, radio remote control grabs, etc.

Grabs come in various kinds of applications as per loading and unloading material requirements. The radio remote control grabs handles of fertilizer, chemicals, cement, coal, etc. at the shipyard. Our mechanical grab bucket charge and discharge the bulk material and improve the efficiency at ports & cargo ships. Grabs, such as the mechanical bucket known as the underwater dredging grab bucket, handle the stone, cement, coal, etc. Most of our hydraulic grab buckets are running at the ship ports and lift the bulk material.

We design and deliver material handling ship grabs in multiple CBM and customize grab hopper dredgers as per shipyard industries. APR Bright Industries exports the grab bucket to Indonesia, Bangladesh, Philippines, Vietnam, Iran, Turkey, Thailand, Myanmar, South Korea, Iraq, Afghanistan, Saudi Arabia, Malaysia, Nepal, Sri Lanka, Singapore, Oman, Kuwait, Qatar, etc.

Clamshell Grab Bucket for Bulk Unloader: self-unloading

APR Bright Industries delivers ship grabs, also known as grab ship unloaders, or cargo grabs, or shore grabs, which are used to handle various types of material at ports, underwater dredging, shipyards, etc. The capacity range of crane capacities is usually between 5 and 75 tons with a working radius from 25.0 to 38.0 meters. For continuous operation double-deck girder cranes handle the high volume of material, and self-unloading station features enable loading and unloading with ship cranes, conveyors, and hoppers.

We are specialized in mechanical four-rope grabs to handle maximum material. Besides, single boom cranes and special double girder dock cranes are designed for loading and unloading on board trans-shipments where high turnover rates & continuous operation are accomplished with grab buckets. Our mechanical ship grabs easily mount on floating cranes and level luffing cranes for bulk material handling processes.

GRABS FOR MOBILE HARBOR CRANES

Mobile harbor crane grabs are the most popular used in port cranes worldwide. These grabs are often used for bulk handling. APR is the leading ship grab manufacturer in India and offers various ship port grabs.

GRABS FOR HARBOR CRANES

Harbor cranes come in different designs. The most popular cranes are on rail-mounted level luffing cranes. APR grabs handles of all kinds of bulk materials on harbor cranes from 5 tons up to 50 tons.

GRABS FOR SHIP CRANES

Ship cranes and deck crane grabs offer practical bulk solutions for various vessels, including bulk carriers, barges & transhippers. We are specialized in rope-operated grabs for 4-rope & single-rope ship cranes.

Grab Type Ship Unloader Specification/Application

Iron ore, clinker, and limestone.
Coal and coke.
Agri bulk Materials like grain, cereals, and corn aggregates.
Fertilizer and Phosphates.
Biomass, wood pellets, and wood chips.
Iron scrap.
Dredging grabs (mainly silt and mud).
Digging clamshell buckets (clay and hard ground layers). Grabs are available in two- and four-rope versions.Industries We Serve:

GRABS FOR FLOATING CRANES

Floating grab cranes are used in ports & open waters for charging & discharging transshipment and lightening for ports with required depth. APR grabs operate on floating cranes from 15 to 65 T.

GRABS FOR SHIP UNLOADERS

Ship unloaders are the traditional way to handle unloading large amounts of bulk materials. We are manufacturers of high-capacity clamshell buckets for ship unloaders from 20 tons up to 80 tons.

Underwater Dredging Grab: FAQ

What exactly is an underwater dredging grab (ship grab)?

An underwater dredging grab is a high-performance mechanical or hydraulic bucket engineered to extract sediment, debris, and silt from port floors, harbors, and offshore riverbeds. These are essential for maintaining navigable depths and executing complex sub-sea material handling.

What types of dredging grabs does APR manufacture?

APR Bright Industries designs and manufactures a diverse range of sub-sea solutions, including Clamshell, Orange Peel, Polyp, and Dragline grabs. We supply hydraulic clamshells and mechanical orange peel variations to ports globally, customized to the specific density and condition of the underwater material.

What materials ensure the durability of these grabs?

We prioritize high-strength engineering by utilizing HARDOX 500 and other wear-resistant alloys. These materials are chosen specifically to withstand the intense abrasive forces of dredging sand, gravel, and submerged debris, significantly extending the service life of the bucket.

How are these grabs protected against submerged conditions?

Our underwater technology incorporates IP67-rated seals and specialized coatings. This ensures that the hydraulic and mechanical components remain fully operational and protected while performing continuous activities in wet or deeply submerged conditions.