Sentinel modular sectional steel barges on a marine construction job

Guide · Comparison

Sentinel vs Poseidon
vs Flexifloat.

Compare Sentinel sectional barge specifications with the manufacturer’s current specifications for Poseidon and Flexifloat.

Compare Sentinel's published specifications with the manufacturer's current specifications for Poseidon and Flexifloat.

Check section sizes, payload, transport, spud options and engineering documentation for your project.

FeatureSentinelPoseidonFlexifloat
Connection systemPin-flange with double-head connector pins; two pins make a solid connection; pins resist corrosion jammingSee the manufacturer's current specificationsSee the manufacturer's current specifications
Section sizes10×20×5, 10×40×5; 10×20×7 / 10×40×7 Heavy Duty; 8×20×4 Back Lake; customSee the manufacturer's current specificationsSee the manufacturer's current specifications
Heavy Duty payload58 tons with 1 ft of freeboard per 41′4″ sectionSee the manufacturer's current specificationsSee the manufacturer's current specifications
Spud wellsInternal or external on any modelSee the manufacturer's current specificationsSee the manufacturer's current specifications
TransportBack Lake stacks two high on a truck and moves anywhere in Canada without permitsSee the manufacturer's current specificationsSee the manufacturer's current specifications
Build origin and steelBuilt by our manufacturing partner in Cornwall, Ontario; CSA G40.20-13/G40.21-13 grade 350WSee the manufacturer's current specificationsSee the manufacturer's current specifications
Approval and drawingsEngineered and stamped drawings; Transport Canada approvedSee the manufacturer's current specificationsSee the manufacturer's current specifications
AvailabilitySold outrightSee the manufacturer's current specificationsSee the manufacturer's current specifications

Connection

Pin-flange connection vs other modular hardware

For Poseidon and Flexifloat, see the manufacturer's current specifications.

Precisely aligned holes give a solid connection after just two double-head connector pins. Many simple connections spaced close together spread stress across the whole joint, so no single pin becomes a critical stress point. Pin every hole before starting a project. The pins resist corrosion jamming; their double heads make connection and removal quick. Unlike bolted systems, there are no frozen bolts or damaged bolt hardware to deal with at disassembly. Easy assembly and disassembly make transport quick.

Deck rating

Crane and pile-hammer platforms

Heavy Duty payload: 58 tons with 1 ft of freeboard per 41′4″ section. Available lengths: two, three and four barge-widths. The 7 ft depth instead of 5 ft gives a significantly stronger platform plus extra freeboard for heavier lifts, surf or choppy water.

Spud barge configuration

Spuds for station-keeping

Internal spud wells go through the deck and anchor the barge in place while working; several internal options are offered. External spud wells can be moved anywhere on the outside of the barge and pin into the existing connecting angle that joins the barges. Internal or external spud wells are available on any model.

Transport

Truckable vs oversize-permit loads

Back Lake 8×20×4 stacks two high on a truck and moves anywhere in Canada without permits. For competitor transport details, see the manufacturer's current specifications.

Where they're built

Built in Canada

Built by our Cornwall, Ontario manufacturing partner using CSA G40.20-13/G40.21-13 grade 350W steel. Every barge is Transport Canada approved and supplied with engineered and stamped drawings.

What it costs to own

Outright purchase, not charter

Sentinel barges are sold outright. Compare written pricing for your project; see the manufacturer's current specifications for competitors.

Questions

Common questions about all three systems

Pricing, specs, lead times, and delivery — straight answers.

Can I mix Sentinel with competitor sections?
Do not assume compatibility. Compare the manufacturer's current specifications before planning a mixed fleet.
How should I compare pricing?
Request written pricing for your configuration. Sentinel barges are sold outright.
Can I build a Sentinel spud barge?
Internal spud wells go through the deck and anchor the barge in place while working; several internal options are offered. External spud wells can be moved anywhere on the outside of the barge and pin into the existing connecting angle that joins the barges. Internal or external spud wells are available on any model.
What documentation comes with Sentinel barges?
Engineered and stamped drawings with every barge; Transport Canada approved. For competitors, see the manufacturer's current specifications.
Spec a Sentinel fleet →See the lineup →Pin-flange connection detail →