30 m3 clamshell dredger with dredging depth of 85 m
30 m3 clamshell dredger with dredging depth of 85 m
This 30 m³ clamshell dredger, built in 2000 in Japan, is a heavy-duty floating crane barge designed for high-volume dredging at exceptional depths. With dimensions of 67.00 x 25.00 x 4.80 metres and a Bureau Veritas classification, the vessel is fully equipped for demanding offshore and port-based operations. Its self-manoeuvring capability, supported by two 235 kW thrusters, allows for controlled positioning during dredging cycles. Central to its performance is the powerful MC160 crane, driven by a 2,650 kW Niigata diesel engine, offering a direct lifting capacity of 160 tons and full revolving capacity up to 400 tons. Designed for stability and output, the vessel handles extreme depths — reaching approximately 85 metres — while lifting large volumes of material per cycle with a 30 m³ clamshell grab. This dredger combines reliable structure with advanced mechanical systems to handle oversized loads in complex environments.
Dredging depth approx. 85 metres
Grab sizes 30 m³ and 15 m³
Total installed power 3,500 kW
Crane capacity up to 400 tons
This clamshell dredger is engineered to perform where standard dredgers fall short. It can reach depths of around 85 metres and maintain high output with a dredging capacity of up to 600 m³ per hour. The hoisting system, driven by Omega Drive Control, supports smooth lifting and lowering at speeds of up to 65 m/min, making it efficient for repetitive heavy-load cycles. The crane features a 30-metre main jib with two 8-metre extension jibs, giving it a full operating reach of 46 metres and a slewing range of 1 rpm. This makes it particularly effective for offshore trenching, port construction and deep water excavation. The vessel includes three 40-metre spuds — two of which are kick-type — providing the stability required for operations in open water. Grab options include a 30 m³ (90-ton) and a 15 m³ (110-ton) clamshell, offering flexibility depending on material density and project demands.
This clamshell dredger offers serious lifting and dredging power in a self-contained, ocean-going platform — ideal for contractors operating in complex maritime conditions. Boogaard Brokers ensures that each vessel listed is technically verified and commercially viable for long-term use. By choosing this dredger, you gain access to a highly specialized unit with an impressive dredging depth, massive lifting capacity, and operational range that exceeds conventional dredgers. Whether your projects involve deep harbour excavation, trenching for offshore installations or bulk material recovery, this unit delivers the strength and reliability needed. With Boogaard Brokers as your partner, you benefit from expert guidance, efficient transaction handling and a proven international sales network. This 30 m³ clamshell dredger is ready for deployment on your next deep dredging contract.
| Specifications | |
|---|---|
| Built/yard | 2000/Japan |
| Classification | Bureau Veritas |
| Dimensions | 67.00 x 25.00 x 4.80 m |
| Total installed power | 3,500 kW |
| Propulsion | for self manoeuvring, 2 thrusters 235 kW/each |
| Crane particulars | MC160 - 400GT, diesel engine Niigate 6L34H, 2,650 kW, direct pull capacity 160 ton, 400 ton full revolving dredging cap. 600m3/hr main jib length 30.00 m + extention jib (2 x 8 m) - 46 m operatiing radius 11.7 - 45.7 m slewing speed 1 rpm jib angle 30 - 80 deg. |
| Lifting capacity | operational radius 14.2 m - 21.3 m, jib angle between 75 - 60 degrees, hoist/lowering system Omega Drive Control ldirect winding (hook) 400 ton grab hoisting robe speed 0 - 60m/min, lowering speed 0-65 m/min |
| Grab size | 30 m3 (90 ton) & 15 m3 (110 ton) |
| Dredging depth | approx 85 m |
| Spuds | 3, 40 m (2 Kick type) |
