Ship Grabs for Ports & Underwater Dredging
Ship grabs are mounted on port and ship cranes for loading and unloading bulk material. The design and mechanism depend on what’s being handled — single-rope, two-rope, four-rope, electro-hydraulic, orange peel, timber grabs, dredging, and radio remote control (RRC) grabs.
Radio remote control grabs handle fertilizer, chemicals, cement, and coal at the shipyard. Our mechanical grab buckets charge and discharge bulk material, improving efficiency at ports and on cargo ships — including the underwater dredging grab bucket, which handles stone, cement, and coal. Most of our hydraulic grab buckets run at ship ports every day, lifting bulk material.
| Crane Capacity Range | 5 to 80 Tons |
| Operating Radius | 25.0 to 38.0 Meters |
| Sub-Sea Protection | IP67-Rated Seals & Corrosion-Resistant Coating |
| Grab Configurations | Mechanical (1/2/4 Rope), Hydraulic, RRC |
| Wear Resistance | High-Strength HARDOX® 500 Alloys |
| Applications | Underwater Dredging, Port Unloading, Ship-to-Shore Cargo |
Clamshell Grab Bucket for Bulk Unloaders
APR Bright Industries delivers ship grabs — also known as grab ship unloaders, cargo grabs, or shore grabs — used to handle material at ports, for underwater dredging, and at shipyards. Crane capacity usually ranges from 5 to 75 tons, with a working radius of 25.0 to 38.0 meters. For continuous operation, double-deck girder cranes handle high volumes of material, while self-unloading stations enable loading and unloading with ship cranes, conveyors, and hoppers.
We specialize in mechanical four-rope grabs built to handle maximum material. Single-boom cranes and special double-girder dock cranes are designed for loading and unloading onboard transshipments, where high turnover rates and continuous operation are achieved with grab buckets. Our mechanical ship grabs mount easily on floating cranes and level-luffing cranes for bulk material handling.
Grabs Engineered for Every Crane Type
From mobile harbor cranes to floating cranes, each grab configuration is matched to the crane’s reach, capacity, and duty cycle.
Grabs for Mobile Harbor Cranes
The most widely used port crane worldwide for bulk handling. APR is a leading ship grab manufacturer in India, offering a range of grabs built for mobile harbor cranes.
Grabs for Harbor Cranes
Harbor cranes come in different designs, most commonly rail-mounted level-luffing cranes. APR grabs handle all kinds of bulk material on harbor cranes from 5 to 50 tons.
Grabs for Ship Cranes
Ship and deck crane grabs offer practical bulk-handling solutions for bulk carriers, barges, and transshippers. We specialize in rope-operated grabs for four-rope and single-rope ship cranes.
Grabs for Floating Cranes
Used in ports and open waters for charging, discharging, transshipment, and lightening where port depth is limited. APR grabs operate on floating cranes from 15 to 65 tons.
Grabs for Ship Unloaders
Ship unloaders remain the traditional way to unload large volumes of bulk material. We manufacture high-capacity clamshell buckets for ship unloaders from 20 to 80 tons.
Grab Type Ship Unloader: Specification & Application
- Iron ore, clinker, and limestone
- Coal and coke
- Agri bulk materials — 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 for clay and hard ground layers, available in two- and four-rope versions
Underwater Dredging Grab: Frequently Asked Questions
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. It’s essential for maintaining navigable depths and carrying out sub-sea material handling.
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.
We prioritize high-strength engineering using HARDOX 500 and other wear-resistant alloys, chosen to withstand the intense abrasive forces of dredging sand, gravel, and submerged debris — significantly extending the service life of the bucket.
Our underwater technology incorporates IP67-rated seals and specialized coatings, ensuring the hydraulic and mechanical components stay fully operational and protected during continuous activity in wet or deeply submerged conditions.