NMX‑MDE‑210 / Rev 00 / 210 bar · IRS / DNV / LRS / closures · deck machinery 2026 · Product Page

NMX-MDE-210 · ENGINEERED TO ORDER — MARINE & NAVAL HYDRAULIC DECK EQUIPMENT

Move the heavy steel. Keep the sea out.

Name: Marine & Naval Hydraulic Deck Equipment
Brand: Neometrix

Hydraulically operated marine & naval deck equipment — watertight doors, hatch covers and ramps that seal against the sea and open on command, and capstans, winches and windlasses that handle the loads that hold a vessel. 210 bar marine hydraulics, redundant with manual override, built and classed to IRS / DNV / LRS with sea trials. Engineered to order — no specific delivered vessel installation is claimed on this page.

Enquire — deck equipment Capability sheet (PDF)

Illustrative image, not a delivered installation — a heavy hydraulically-operated watertight door set into a grey steel marine bulkhead: a thick steel door leaf on hinges with two hydraulic actuating cylinders, a row of dogging cleats around the frame and a rubber sealing gasket, in a plain painted ship's passageway

Fig · 01 A hydraulic watertight door — as strong as the bulkhead, yet it moves — illustrative, not a delivered installation

Hydraulics

210bar

Classed

IRS/ DNV / LRS

Closures

WTwatertight

Handling

winch+ capstan

Safety

manualoverride

ISO 9001 / 14001 Engineered to order Classed IRS / DNV / LRS Redundant + manual override Noida · India

Overview

The hydraulics franchise, gone to sea.

A hydraulically operated watertight door, a mooring capstan and an anchor windlass are, underneath, the same thing Neometrix already builds ashore — a hydraulic power pack, cylinders, actuators and controls — engineered for the deck, to class, against the sea. This page is that competence, marinised.

Illustrative image, not a delivered installation — a hydraulic mooring winch and capstan on a grey ship's deck: a horizontal grooved cable drum with a vertical warping head beside it, a hydraulic drive motor and a band brake, mounted on a welded steel seat, with mooring rope led to a fairlead

Fig · 02 Deck machinery — a hydraulic mooring winch and capstan, sized by safe working load and brake — illustrative, not a delivered installation

A ship’s door is a bulkhead that has to move. A watertight closure must be as strong and as sealed as the structural steel it sits in — holding the sea and the pressure head — yet open and shut reliably for decades. Heavy hydraulic actuation and seals rated to the head solve that paradox.

Salt is the enemy of everything. Every part lives wet, moving and corrosive, so marine steels, bronze, coatings and sealed hydraulics are what let deck equipment survive where shop equipment would seize.

Safety-critical means redundancy. A door that fails shut can trap a crew; one that fails open can flood a compartment. So closures carry redundant actuation and a manual override — damage-control discipline, not an afterthought.

Ashore, a hydraulic door is a convenience. At sea, it is a bulkhead that opens — and everything about how it is built assumes the worst day, not the calm one.

Engineered to Order

Turnkey, naval and commercial

Designed, built and commissioned as one scope — quoted across naval and marine deck-equipment requirements for closures and deck machinery. Size, load, seal and layout follow from the opening, the vessel and the class rules. No specific delivered vessel installation is claimed on this page.

Built to Class

IRS / DNV / LRS, proven at sea

Marine equipment lives or dies by classification: materials, welding, hydraulics and safety are designed and surveyed to IRS, DNV or LRS, then demonstrated in harbour and sea acceptance trials — the record that certifies a closure will hold and a winch will hold on.

The Hydraulics Heart

Power packs and actuators, marinised

The muscle is Neometrix’s own line: marine hydraulic power packs, cylinders and servo actuators with local and remote control and manual override. The deck equipment is that proven hydraulics engineered for salt water and a moving deck.

Architecture

One hydraulic heart, two families.

The schematic shows a marine hydraulic power pack and control driving two families — watertight closures and deck machinery — and the detail panel unpacks the watertight-closure paradox that defines the whole discipline.

FIG · 03DECK-EQUIPMENT ARCHITECTURE · POWER PACK · CONTROL + OVERRIDE · CLOSURES · DECK MACHINERY · CLASS

Fig · 03 Power and control drive the closures and the machinery; corrosion, sealing, redundancy and class are what let it all survive the sea

Arc · 01

Marine Hydraulic Power & Control

A 210 bar marine power pack — reservoir, pumps, accumulator — and a control system of directional valves with local and remote operation and manual override. The single hydraulic heart that drives every closure and winch on the deck.

Arc · 02

Watertight & Weathertight Closures

Hydraulically operated doors, hatch covers, ramps and shell doors — cylinders, seals rated to the pressure head, dogging and position indication. As strong and as sealed as the bulkhead, yet opening and shutting on command.

Arc · 03

Deck Machinery & Line Handling

Capstans, mooring and warping winches, anchor windlasses and davits — sized by safe working load, brake holding load, line pull and speed, with fail-safe braking. The machinery that holds a vessel alongside and at anchor.

Arc · 04

Survive the Sea, Prove it to Class

Corrosion-resistant materials, sealed hydraulics, redundancy and manual override for damage control — designed and surveyed to IRS / DNV / LRS and proven in harbour and sea acceptance trials before handover.

Have a watertight closure, deck-machinery or marine-hydraulics requirement? Send the opening or load schedule and the class — a clause-by-clause compliance matrix within two working days · [email protected]

Send tender spec

Specifications

Reference equipment, sized to your vessel.

The parameters below describe reference marine deck equipment. Closure size and pressure head, winch and capstan loads, hydraulic capacity, materials and class follow from the opening, the vessel and the classification rules that apply.

Illustrative image, not a delivered installation — a marinised hydraulic power pack in a painted steel deckhouse: a rectangular oil reservoir with two motor-pump sets on top, an accumulator, a bank of directional control valves on a manifold, pressure gauges with plain faces and a grey control cabinet, all on a welded seat with a drip tray

Fig · 04 The marine hydraulic power pack and valve control — the heart that drives the deck — illustrative, not a delivered installation

Where marine deck equipment actually fails

Not in the yard — in the years of salt after it. A closure whose seal was specified for still water weeps under a real pressure head; a winch brake sized for the average pull lets go on the worst one; hydraulics that were fine in a workshop corrode and stick in a wet, moving deckhouse; a door with no manual override becomes a trap the day its power is lost.

That is why the seal is rated to the head, the brake to the holding load, the materials to the salt, and every safety-critical closure to a manual override — and why it is all surveyed to class and proven at sea. Marine equipment is a promise about the worst day, and every line here is arranged to keep it.

Full specification — expand

Scope	Marine & naval hydraulic deck equipment — turnkey: structural & hydraulic design, power & control system, closure / winch / capstan fabrication, corrosion engineering, controls, class approval, installation, harbour & sea trials, documentation and training
Watertight Closures	Hydraulically operated watertight / gastight doors, hatch covers, ramps, shell doors · cylinders · seals rated to the pressure head · dogging · position indication · manual override
Deck Machinery	Capstans, mooring & warping winches, anchor windlasses, cargo/stores winches, davits · sized by safe working load, brake holding load, line pull & speed · fail-safe braking
Marine Hydraulics	Power pack — reservoir, pumps, accumulator — at about 210 bar · directional-valve control · local + remote operation + manual override · sealed for the marine environment
Safety / Damage Control	Redundant actuation · manual override · position indication · interlocks — a closure must never trap a crew nor flood a compartment
Corrosion Engineering	Corrosion-resistant marine steels, bronze and coatings · sealed hydraulics · materials and finishes selected for salt, wet and motion
Classification	Designed, built and surveyed to IRS / DNV / LRS rules as the vessel requires · documentation and material certification to class
Acceptance	Harbour acceptance trials (HAT) and sea acceptance trials (SAT) · every closure and winch function, load and seal proven before handover
Vessels	Naval, commercial and coast-guard vessels · generic marine deck equipment · structural & damage-control, not a fighting system
Sourcing	Hydraulic pumps, valves, seals, motors, brakes and instrumentation are proprietary items from established makers · Neometrix engineers and integrates the system — its hydraulics franchise, marinised
Status	Engineered to order and delivered turnkey · quoted across naval and marine deck-equipment requirements · no specific delivered vessel installation is claimed on this page

PDF · 1 page

Marine & Naval Hydraulic Deck Equipment — Capability Sheet

Tender Response

Send your closure or load schedule — compliance matrix in two working days

Variants

One discipline, four lines.

Tenders call it hydraulically operated closures, deck machinery, a marine hydraulic system or a deck-equipment upgrade. The discipline — move heavy steel, seal the sea out, and survive the salt to class — is common to all.

Var · 01

Watertight & Weathertight Closures

Hydraulically operated doors, hatch covers, ramps and shell doors — sealed to the pressure head, dogged, position-indicated and manually overridable, to class.

Var · 02

Deck Machinery & Line Handling

Capstans, mooring and warping winches, anchor windlasses and davits — sized by safe working load and brake, with fail-safe holding and local or remote control.

Var · 03

Marine Hydraulic Power & Control

Marinised hydraulic power packs, valve control and actuators — the driving system for closures and machinery, supplied on its own or as part of a deck-equipment package.

Var · 04

Closure & Handling Upgrades / Re-Class

Refit and upgrade of existing closures and deck machinery — hydraulics, seals, brakes and controls brought up to load, safety and classification requirements.

Applications

Where it applies.

Wherever heavy steel has to move on a deck, and the sea has to stay on the outside.

A · 01Naval vessels — watertight doors, hatches and damage-control closures

A · 02Commercial & coast-guard vessels — weathertight closures and ramps

A · 03Mooring & berthing — capstans and warping winches

A · 04Anchor handling — windlasses and cable holders

A · 05Cargo, stores & boat handling — winches and davits

A · 06Refit & re-class — deck-equipment and hydraulics upgrades

FAQ

Common questions.

Plain-language answers from the engineering team.

Q · 01 What actually makes a hydraulic watertight door hard to build?

It has to be two contradictory things at once. As part of a ship’s subdivision, a watertight door is a piece of the structural bulkhead — it must be as strong and as tightly sealed as the steel around it, able to hold back a flooded compartment at a real pressure head. But unlike the bulkhead, it has to open and shut on command, quickly and reliably, thousands of times over decades, in a wet and moving environment. Reconciling those is the whole engineering problem: a leaf stiff enough not to deflect and break its seal under load, a seal rated to the head rather than to still water, dogging that clamps it uniformly, hydraulic actuation strong enough to move a heavy leaf and controlled enough not to slam it, and position indication so the crew always knows its state. Get any one wrong and you have either a door that leaks or a bulkhead that does not really close.

Q · 02 Why does marine equipment need such different materials from shore equipment?

Because seawater attacks everything, continuously, while the deck moves under it. A hydraulic winch that would run for years in a factory will corrode, gall and seize within a season if it is built to shore standards and put to sea — salt spray finds every unprotected surface, dissimilar metals set up galvanic corrosion, and constant motion works fasteners and seals loose. So marine deck equipment is built from corrosion-resistant steels, bronze and specified coatings, with sealed hydraulics, drainage, and careful attention to which metals touch which. It is also why classification societies exist: the materials, welding, protective treatment and hydraulics are all specified and surveyed to marine rules, not general engineering practice. The equipment looks similar to its shore cousins; what is different is everything chosen to survive the salt.

Q · 03 What is the manual override for, and why is it non-negotiable?

Because power fails at the worst possible moment, and a closure without a fallback becomes a hazard. Consider the two failure directions: a watertight door that loses hydraulic power and cannot be opened can trap a crew in a compartment; one that cannot be shut can let a compartment flood. Neither is acceptable, so every safety-critical closure carries a manual override — a hand pump or mechanical means to operate it with no hydraulic power — together with redundant actuation, clear position indication and interlocks. This is the damage-control discipline that runs through all marine design: assume the system will fail, and make sure a human can still put the door where it needs to be. It is a requirement of the class rules, not an optional extra, and it shapes how the whole actuation is engineered.

Q · 04 How are winches and capstans sized — what really matters?

Not the drum, but the loads and the brake. A mooring or warping winch is sized by its safe working load and its rendered pull and speed — how hard and how fast it can heave a line — but the number that keeps a ship safe is the brake holding load: the force the winch can hold with the drive stopped, which must exceed the worst line tension the vessel will see without the rope parting or the drum slipping. A capstan is sized similarly for warping and line handling. Get the brake wrong and a winch that hauls beautifully still fails the one job that matters in a blow. So the sizing starts from the vessel’s mooring and anchoring analysis, sets the SWL, pull, speed and holding load, and only then chooses the hydraulic motor, gearing and fail-safe brake — the brake that sets automatically when power or control is lost.

Q · 05 What does classification and sea-trial approval involve?

It is the marine world’s way of proving equipment before it goes to sea for real. A classification society — IRS, DNV or LRS — reviews the design against its rules, witnesses material and weld certification, and inspects manufacture, so the closure or winch is built to a recognised standard rather than a private one. Then the equipment is proven twice on the vessel: harbour acceptance trials (HAT) exercise every function, load and seal alongside, and sea acceptance trials (SAT) confirm it works with the ship at sea, moving. A watertight door is pressure-tested to its head; a winch is load- and brake-tested; overrides and indications are demonstrated. Only when the class surveyor and the trials agree is the equipment accepted. We build to the class the vessel needs and carry that survey and trials into the scope.

Q · 06 Do you manufacture the equipment, or integrate bought-in parts?

The system, from a base of proprietary components. Hydraulic pumps, valves, seals, electric motors, brakes and instrumentation are specialist items bought from established makers, and choosing and integrating the right ones for the marine duty is part of the engineering. What Neometrix designs and delivers is the equipment as a working, classed whole: the structural and hydraulic design, the power pack and control, the closure, winch and capstan fabrication, the corrosion engineering, the safety and override arrangements, and the class approval, installation and sea trials. It is the same hydraulics competence behind our power packs, cylinders and servo actuators, engineered for the deck. To be plain about status: this capability is offered turnkey and has been quoted across naval and marine requirements; no specific delivered vessel installation is claimed on this page.

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Hydraulics & marine systems from Neometrix.

The hydraulic heart behind the deck equipment — and the marine sibling — engineered at our Noida facility.

↗ Hydraulic Power

Hydraulic Power Pack & Actuator System

The power pack and actuators — the driving heart, marinised for the deck.

↗ Actuation

Servo-Hydraulic Actuators

Precise, high-force actuation — the muscle that moves the steel.

↗ Marine

Hyperbaric & Saturation Diving Systems

The marine sibling — life-support systems for the sea.

Browse all Neometrix product lines.

Get a quotation

Send your closure or
deck-machinery schedule.

The Defence Programmes desk replies within two working days with a clause-by-clause compliance matrix to your class rules and a budgetary quotation. Write to [email protected] or use the form.

Enquire — deck equipment Capability sheet (PDF) +91 7777 876 876

ISO 9001 / 14001 ENGINEERED TO ORDER — MARINE & NAVAL HYDRAULIC DECK EQUIPMENT 210 bar · IRS / DNV / LRS · SEA-TRIALLED ENGINEERED IN NOIDA · INDIA

Move the heavy steel. Keep the sea out.

The hydraulics franchise, gone to sea.

Turnkey, naval and commercial

IRS / DNV / LRS, proven at sea

Power packs and actuators, marinised

One hydraulic heart, two families.

Marine Hydraulic Power & Control

Watertight & Weathertight Closures

Deck Machinery & Line Handling

Survive the Sea, Prove it to Class

Reference equipment, sized to your vessel.

Where marine deck equipment actually fails

One discipline, four lines.

Watertight & Weathertight Closures

Deck Machinery & Line Handling

Marine Hydraulic Power & Control

Closure & Handling Upgrades / Re-Class

Where it applies.

Common questions.

Hydraulics & marine systems from Neometrix.

Hydraulic Power Pack & Actuator System

Servo-Hydraulic Actuators

Hyperbaric & Saturation Diving Systems

Send your closure or
deck-machinery schedule.

Similar Products

Share This Page

Move the heavy steel. Keep the sea out.

The hydraulics franchise, gone to sea.

Turnkey, naval and commercial

IRS / DNV / LRS, proven at sea

Power packs and actuators, marinised

One hydraulic heart, two families.

Marine Hydraulic Power & Control

Watertight & Weathertight Closures

Deck Machinery & Line Handling

Survive the Sea, Prove it to Class

Reference equipment, sized to your vessel.

Where marine deck equipment actually fails

One discipline, four lines.

Watertight & Weathertight Closures

Deck Machinery & Line Handling

Marine Hydraulic Power & Control

Closure & Handling Upgrades / Re-Class

Where it applies.

Common questions.

Hydraulics & marine systems from Neometrix.

Hydraulic Power Pack & Actuator System

Servo-Hydraulic Actuators

Hyperbaric & Saturation Diving Systems

Send your closure ordeck-machinery schedule.

Similar Products

Share This Page

Send your closure or
deck-machinery schedule.