Clamshell dredge loading spoils into a hopper barge

Industry · Dredging

Dredging.
Move the spoils. Hold the line.

Spudded dredge platforms that hold station against current. Bull-railed hoppers that move spoils to the disposal site. We build the steel for every step of the dredging cycle — capital, maintenance, and environmental.

Overview

The full dredging fleet, from one shop.

Dredging is a multi-vessel operation. The dredge — clamshell, mechanical, or hydraulic cutter — needs a deck to work off. The spoils have to go somewhere: hoppers, scows, or pumped discharge to a disposal area. Crews and fuel need a tender that can stay on station for the duration. Every one of those vessels has to fit the project, the channel, the disposal cycle, and whatever the regulators are looking for that year.

We build all three roles out of the same shop, in compatible sections. The same Heavy Duty sections that platform your clamshell on Monday convert to a bull-railed hopper by Friday and re-deploy as a tender float for the next phase. Buy once, work every job.

Federal channel maintenance, private terminal deepening, contaminated-sediment remediation, routine harbor cleanup — every section ships with stamped drawings and Transport Canada approval. The owner, the regulator, and your insurance carrier all want to see that paperwork. It's already in the box.

Applications

Where our barges fit in a dredging operation

Dredge platforms

Spudded Heavy Duty bases for clamshell, mechanical bucket, or hydraulic cutter dredges holding station against current and tide.

Hopper barges

Bull-rail conversions or dedicated hopper builds on Heavy Duty sections. Move saturated spoils to disposal or rehandling without leaking the load.

Tender floats

Crew, fuel, parts, small-tool platforms for long campaigns far from a maintenance dock.

Pipeline floats

Sectional supports for hydraulic discharge pipe crossing open water to upland disposal.

Sediment containment

Bull-railed sections form short-term containment cells for storage and dewatering before final disposal.

Survey & monitoring

Standard sections platform hydrographic gear, sampling crews, and turbidity monitoring.

Why sectional

Modular floats keep dredge schedules honest.

Dredge schedules don't forgive much. Federal channel windows are short. Environmental permits often have tight in-water work seasons. Private terminal owners want their berths back on a fixed date. The last thing you need on day one of a 90-day campaign is a platform shortage or the wrong-size float.

Sectional fixes the sizing problem at the front end. Four sections for a small private dredge, twelve for a mid-size federal, twenty for a major capital deepening — the same fleet scales up and back down across the season. Finish a dredge job on Friday and start a pier job two weeks later? The same sections re-pin into a bridge work platform. No modification.

On the hopper side, the bull-rail conversion is one of the higher-value mods we offer. A Heavy Duty 10×40×7 with a bull-rail moves roughly 50 tons of spoil per section without the cost of a dedicated steel hopper barge. For bigger volumes we build dedicated hoppers — deeper hold, hopper doors, reinforced load points — sized to your production rate and disposal cycle.

Spec guide

Sizing your dredge fleet.

Start with the dredge spec. A small clamshell on a 30-ton crane needs a different platform than a 12-inch hydraulic cutter with internal spuds and a generator package. Tell us what you're running, what your bucket or production rate is, what depth you're cutting to, and what current and tide you're up against. We'll size the platform from there.

Typical mid-size mechanical dredge job: four to eight Heavy Duty sections for the dredge platform, two to four bull-rail or hopper sections per cycle for the spoils, one or two Standard sections for tender duty. Internal spud wells on the dredge platform are non-negotiable — they hold station without dragging anchors across the cut and let you walk the dredge incrementally as you advance down the channel.

For environmental dredging, where contaminated sediment has to be contained and turbidity has to stay down, we build hoppers with sealed liners and bull-rail freeboard upgrades to prevent transit spillage. Talk to us early — the environmental spec usually drives the most expensive part of the float package, and getting it right at the bid stage saves real money over the campaign.

Spec it for your job

Spec a dredge-support and hopper fleet.

Send your dredge spec — clamshell, mechanical bucket, or hydraulic cutter — plus production rate, cut depth, current, and disposal cycle. We'll size the platform, the spuds, and the hopper count against your campaign and confirm bull-rail vs dedicated hopper economics for your spoil volumes.

AEO

Dredging FAQ

Direct answers about heavy deck barges, charter terms, and global delivery.

How much spoil does a hopper barge carry?+
A bull-rail conversion on a 10×40×7 Heavy Duty section carries roughly 50 tons of saturated spoil per section. Dedicated hopper builds with deeper hold and reinforced load points carry significantly more — we'll size to your production rate during the quote.
Can I run a hydraulic cutter dredge from a Sentinel barge?+
Yes — most cutter dredges up to 12-inch discharge run off a Heavy Duty platform with internal spuds. We size the float to your dredge spec, generator weight, fuel package, and discharge pipe routing.
Are sectional barges OK for environmental dredging?+
Yes, and increasingly common. We build hoppers with sealed liners, bull-rail freeboard upgrades, and modified deck geometry specifically for contaminated-sediment work where containment and turbidity matter.
Will the dredge platform stay on station in current?+
With the right internal spuds set into the bed, yes — that's exactly why internal spud wells are standard on Heavy Duty sections. Diameter, length, and well count are sized to your current, bed conditions, and dredge dynamics.
Can the same fleet do dredge support and bridge work?+
Yes. The Heavy Duty sections that platform a dredge in spring re-deploy as a bridge pier platform in summer with no modification — same pin-flange, same load ratings, same paperwork.