NMX‑GAL‑30 / Rev 00 / marine access / gangway · ladder 2026 · Product Page

NMX-GAL-30 · ENGINEERED TO ORDER — MARINE GANGWAY & ACCOMMODATION LADDER

Board the ship. Whatever the tide.

Name: Marine Gangway & Accommodation Ladder
Brand: Neometrix

A berthed ship never sits still: the deck rises and falls with the tide, sinks and lifts with draught as cargo moves, and works against its lines in surge and sway. So safe access is a machine, not a stair. A telescopic shore gangway on its quay pedestal luffs, slews and telescopes, resting a rolling shoe on the deck so the ship can move beneath it. The ship’s own accommodation ladder — self-levelling treads, davit and winch — deploys alongside the hull and stows at sea. And floating gangways and linkspans carry the same job to pontoons and inland berths. All of it rated, railed, lit and netted, with limits watched to the safe-access rules. We fabricate the structure, build the mechanism, install at the berth and load-test — the deck-machinery franchise, pointed at getting people aboard. Engineered to order — no delivered gangway is claimed.

Enquire — marine gangway Capability sheet (PDF)

Illustrative image, not a delivered installation — a telescopic shore gangway on a slewing pedestal at a quay edge, luffing cylinders beneath, its telescoping span reaching down to rest a rolling shoe on a plain unmarked grey deck edge, handrails and mesh, harbour water below, no ship superstructure, no names and no people

Fig · 01 A telescopic shore gangway — pedestal, luffing cylinders and telescoping span, riding the gap between quay and deck — illustrative, not a delivered installation

Spans

quay to shipand shore to pontoon

Rides

the tideluff, telescope, rolling shoe

Deploys

davit + winchthe ship’s own ladder

Rated

persons + angleto the safe-access rules

Built

to orderfitted + load-tested

ISO 9001 / 14001 Engineered to order Marine access & structures Installed & load-tested Noida · India

Overview

The gap moves all day.

Between a quay and a ship’s deck there is a gap that never holds still. The tide raises and lowers the whole ship metres in a day; the draught changes as cargo, fuel and stores go on and off; and the ship works against its mooring lines in wind and swell, surging and swaying at the berth. Every person who boards — crew, dockyard workers, pilots, visitors — crosses that moving gap, and the rules are strict about how: within inclination limits, on a rated walkway, railed, lit, and with a safety net rigged beneath. That is why ship access is engineered as a machine that follows the ship, not a stair that hopes it stays put.

Illustrative image, not a delivered installation — a ship's accommodation ladder rigged on a plain grey unmarked hull side: an aluminium stair flight with self-levelling treads, an upper platform with davit arm and winch above, a lower platform near the waterline, handrails, stanchions and a rigged safety net, no markings and no people

Fig · 02 An accommodation ladder rigged alongside — the ship’s own carried access: davit, winch, self-levelling treads and the net beneath — illustrative, not a delivered installation

The shore gangway rides the motion. On the quay stands a tower or slewing pedestal carrying the gangway span. As the ship rises and falls, the gangway luffs to follow; as the gap lengthens and shortens, it telescopes; and its ship end is not fixed at all — it rests on a rolling or sliding shoe, so the deck slides beneath it as the ship works. Hydraulic or electric drives do the following; the geometry is sized so the walking angle stays inside the safe-access limits across the entire tidal range, and self-levelling treads keep the footing horizontal as the slope changes.

The accommodation ladder is the ship’s own. Carried against the hull and stowed at sea, it is deployed at anchor or alongside by its davit and winch: an aluminium stair flight with upper and lower platforms, self-levelling treads, handrails and stanchions, reaching down toward the waterline for boats, barges and the berth — the ISO 5488 pattern that classification surveyors expect to see rigged correctly.

Floating berths carry the same problem inland. Where the berth itself floats — steel or HDPE pontoons on a river or in a basin — access becomes a linkspan or floating gangway: hinged at the shore, riding the pontoon at the other end, articulating as the water level swings. Different waters, same discipline: span the gap, ride the motion, keep the angle and the footing safe.

A gangway is judged at the worst moment of the worst tide — low water on a laden ship, the span at its steepest, the deck still moving. Everything in the engineering exists so that crossing it, at that moment, is unremarkable.

The Ship Never Sits Still

Tide, draught, lines

Metres of tide, a draught that changes with every crane lift, and a hull working its moorings — the access gap moves all day, and the machine has to follow it.

Span It and Ride It

Luff, telescope, roll

The gangway luffs and telescopes as the ship moves, resting a rolling shoe on the deck; the ladder’s self-levelling treads keep the footing flat at any slope.

Rated, Railed, Watched

To the safe-access rules

Load rating in persons, inclination limits, rails and mesh, lighting, the net rigged beneath, and limit monitoring with interlocks — then a load test before anyone crosses.

Architecture

Span, ride, protect.

The schematic follows the problem — a moving ship, a gap to span, motion to ride, limits to hold — and shows the machine that answers it: the structure, the mechanism, the shoe at the interface and the control and safety layer over it all.

FIG · 03GAL ARCHITECTURE · STRUCTURE / MECHANISM / SHOE & INTERFACE · LIMITS, INTERLOCKS, NET & LIGHTING

Fig · 03 Span the gap, ride the motion, hold the limits — a fabricated structure on a driven mechanism, resting a rolling shoe on a moving deck, watched by its limit and safety systems

Arc · 01

The Structure

Steel and aluminium spans, quay towers and pedestals, platforms, non-slip treads, handrails and mesh — fabricated, and engineered for the berth’s reach and the persons rating.

Arc · 02

The Mechanism

Luffing cylinders, telescoping guides and rollers, slewing bearings, and the davit and winch systems that deploy the ship’s ladder — hydraulic or electric, the deck-machinery competence.

Arc · 03

The Shoe & Interface

The ship end rests, it is not fixed: a rolling or sliding shoe lets the deck move beneath the span, and the geometry keeps the walking angle inside limits across the tidal range.

Arc · 04

Control & Safety

Limit sensing, interlocks and alarms; lighting for night working; the safety net beneath; and a load test at commissioning — certified to the rules before use.

Have a gangway, accommodation-ladder or berth-access requirement? Send the berth, the tidal range and the ship interface — a clause-by-clause compliance matrix within two working days · [email protected]

Send tender spec

Specifications

Reference access, built to the berth.

The parameters below describe a reference installation. The span, the articulation, the drive, the persons rating and the ship interface all follow from the berth — its tidal range, the vessels it serves, and the rules it is certified to.

Illustrative image, not a delivered installation — the pedestal end of a telescopic gangway: a slewing bearing ring, two luffing hydraulic cylinders, telescoping guide rollers and a small control pedestal with a blank panel and emergency stop, with neat hydraulic hoses, no text and no people

Fig · 04 The mechanism — slewing ring, luffing cylinders and telescoping guides: the deck-machinery engineering that lets a walkway follow a ship — illustrative, not a delivered installation

Where ship access goes wrong

In the geometry and the discipline, more than the steel. A gangway sized without the full tidal range ends up steeper than the rules allow at low water; a ship end fixed instead of resting tears itself as the ship works; treads that do not self-level become a ramp at exactly the wrong angle; a missing net or failed lighting turns a routine crossing into a hazard; and an access that was never load-tested is an assumption, not a certification.

So the geometry is designed from the berth’s tidal data and the ship interface outward, the ship end rests on its shoe, the treads level themselves, the limits are sensed and interlocked, the net and lighting are part of the design rather than an afterthought — and the finished access is load-tested and certified at commissioning. The measure of a gangway is that the worst tide of the year changes nothing for the person crossing it.

Full specification — expand

System	Marine gangway & accommodation ladder — shore-to-ship, ship-to-water and shore-to-pontoon access machines; fabricated, mechanised, installed, load-tested & certified
Shore Gangway	Telescopic / articulated span on a quay tower or slewing pedestal — luffing, slewing, telescoping; ship end on a rolling / sliding shoe; walking angle held inside limits across the tidal range
Accommodation Ladder	The ship’s own access to the ISO 5488 pattern — aluminium flight, upper & lower platforms, self-levelling treads, davit + winch deployment, stowed at sea
Floating Access	Linkspans, brows & floating gangways to steel or HDPE pontoons — hinged ashore, riding the pontoon, articulating with water level
Structure	Steel / aluminium spans, towers & pedestals, platforms, non-slip treads, handrails & safety mesh — engineered to reach, rating & berth
Mechanism	Luffing cylinders / actuators, telescoping guides & rollers, slewing bearings, davit & winch systems, shoes — hydraulic or electric drives
Safety	Rated in persons; inclination limits; rails, mesh, lighting, safety net; limit sensing, interlocks & alarms
Rules	Classification & safe-access requirements — the ISO 5488 / ISO 7061 patterns — with load test & certification at commissioning
Delivery	Fabricated, mechanised, controlled, installed & commissioned at the berth; refit & replacement of existing access undertaken
Sourcing	Aluminium extrusions & tread sections, standard winch units, slewing bearings & sensors are bought-in specialist items; Neometrix fabricates, mechanises, controls, installs, load-tests & certifies
Status	Engineered to order · sized to the berth, tidal range, ship interface & rules · grounded in the delivered marine deck-machinery, fabrication & access-equipment franchises · no specific delivered gangway or ladder is claimed on this page

PDF · 1 page

Marine Gangway & Accommodation Ladder — Capability Sheet

Tender Response

Send your berth, tidal range & ship interface — compliance matrix in two working days

Variants

One problem, the access you need.

Requirements call it a telescopic gangway system for a berth, an accommodation ladder, or pontoons and gangways for a floating terminal. The problem — span a moving gap safely — is common; the machine follows the berth and the vessel.

Var · 01

Telescopic / Articulated Shore Gangway

Quay pedestal or tower, luff + slew + telescope, rolling shoe — berth-to-ship access engineered to the full tidal range.

Var · 02

Ship’s Accommodation Ladder

The ISO 5488 pattern — aluminium flight, platforms, self-levelling treads, davit + winch, hull stowage.

Var · 03

Floating-Berth & Pontoon Access

Linkspans, brows and floating gangways to steel or HDPE pontoons — the inland-waterways and small-craft form.

Var · 04

Refit, Replacement & Load-Test

Existing gangways and ladders surveyed, refurbished or replaced, then load-tested and re-certified to the rules.

Applications

Where it gets them aboard.

Wherever people cross between shore, ship and water — and the gap will not hold still.

A · 01Naval berths & shipyards

A · 02Ports & terminals

A · 03Inland waterways & floating jetties

A · 04Ship accommodation ladders & brows

A · 05Harbour-craft & pilot access

A · 06Refit, load-test & certification

FAQ

Common questions.

Plain-language answers from the engineering team.

Q · 01 Why is boarding a ship an engineering problem at all?

Because the two ends of the walkway refuse to stay put relative to each other. The quay is fixed; the ship is not. The tide moves the whole vessel up and down — at many berths by several metres in a cycle. The draught changes continuously while cargo, fuel and stores are worked, lifting or settling the deck by further metres over a call. And even a well-moored ship works against its lines in wind, swell and passing traffic — surging fore and aft, ranging off the fenders. So the gap a person must cross changes in length, height and angle all day long. The safe-access rules respond with hard requirements: a rated walkway, inclination limits that must not be exceeded at any water level, rails and mesh, lighting, and a safety net rigged beneath the span. Meeting those limits at every state of tide and loading is a geometry and mechanism problem — which is why proper ship access luffs, telescopes, levels its treads and rests on a moving deck, rather than being bolted to it.

Q · 02 How does a telescopic shore gangway work?

It is a walkway carried on a machine that keeps its geometry legal while the ship moves. On the quay stands a tower or pedestal — often on a slewing bearing, so the whole gangway can swing to serve the berth. The span itself does two things: it luffs (pivots up and down at the pedestal) to follow the deck as tide and draught change, and it telescopes (one section sliding within another on guides and rollers) so its length matches the gap. Drives are hydraulic or electric. The critical subtlety is at the ship end: it is not fixed to the ship. It rests on a rolling or sliding shoe, so the deck can rise, fall and shift beneath it without loading the structure — the gangway follows the ship rather than fighting it. The geometry is designed from the berth’s full tidal range so the walking angle never exceeds the safe-access limit, self-levelling treads keep footing horizontal as the slope changes, and limit sensors and interlocks alarm before any travel or angle runs out. At commissioning the whole assembly is load-tested at the berth it will serve.

Q · 03 What exactly is an accommodation ladder?

It is the ship’s own, carried means of access — the stair you see rigged diagonally down a hull side in any harbour. Structurally it is an aluminium stair flight with an upper platform at deck level and a lower platform near the water, fitted with self-levelling treads that stay horizontal whatever angle the flight takes as the ship’s freeboard changes. It is deployed and recovered by a davit and winch — swung outboard, lowered alongside, and adjusted through the call — and at sea it stows flat against the hull or on deck. It serves boats, barges, pilots and the berth itself, and it is built to the pattern the ISO 5488 standard and classification surveyors expect: specified person loading, rail and stanchion arrangement, tread geometry, and the safety net rigged beneath whenever it is in use. It is, in short, a small deck machine — structure, winch, davit and rigging — which is exactly the competence our marine deck-machinery line is built on.

Q · 04 What about floating berths and pontoons?

They move the problem rather than removing it. On a river or in a basin with a large water-level swing, the berth itself is often a floating pontoon — steel, or HDPE for lighter duties — that rises and falls with the water, keeping the freeboard to the craft constant. But the shore does not move, so the access from shore to pontoon becomes the articulating element: a linkspan or floating gangway, hinged at the shore end and resting on or hinged to the pontoon at the other, changing slope through the day exactly as a quay gangway does across the tide. The same disciplines apply — a persons rating, inclination limits managed by making the span long enough for the worst water level, self-levelling or stepped treads where slopes are large, rails, mesh, lighting and netting — plus marine-grade detailing for a structure that lives on the waterline: buoyancy, mooring and anchor arrangements for the pontoons, and corrosion protection throughout. We engineer the pontoon access as one system — spans, hinges, bearings and the pontoon interface together.

Q · 05 How are safety and certification handled?

As requirements designed in, then proved — not features added after. The structure carries a rating in persons with the factors the rules demand, and its geometry is set from the berth’s tidal data so inclination limits hold at every water level. The walkway is railed and meshed full-length, treads are non-slip and self-levelling, lighting covers night working, and the safety net beneath the span is part of the rigging arrangement, not an option. The mechanism carries limit sensing on travel and angle, with interlocks and alarms before any limit is reached, and manual lowering or recovery paths for power failure. Then it is proved: at commissioning the access is load-tested — the rated load applied and held, deflections checked — and the installation documented for the owner’s and the surveyor’s records, to the classification and safe-access requirements (the ISO 5488 and ISO 7061 patterns). Re-certification after refit or repair follows the same route: survey, refurbish, re-test, document.

Q · 06 What do you build, and what is bought-in?

We build the access as a machine, and the split is the familiar one across our marine line. What Neometrix does is the structure — steel and aluminium spans, towers and pedestals, platforms, rails and mesh, fabricated and finished for marine service; the mechanism — luffing cylinders and actuators, telescoping guides and rollers, slewing arrangements, davit and winch systems and the rolling shoes, hydraulic or electric; the controls and safety systems — limit sensing, interlocks, alarms and lighting; the installation and commissioning at the berth; and the load test and certification that puts it into service — plus survey, refit and replacement of access already in use. What is bought-in specialist is the aluminium extrusions and proprietary tread sections, standard winch units and wire rope, slewing bearings, and motion and limit sensors — selected and integrated by us. It is the access member of the same family as our marine deck machinery (winches, davits and hydraulics are the shared engineering) and the marine sibling of our aircraft access ladders and passenger steps. Engineered to order — no specific delivered gangway or ladder is claimed on this page.

↗

The marine line from Neometrix.

The deck machinery that shares its winches and davits, the aviation sibling of the same access problem, and the naval line this belongs to — engineered at our Noida facility.

↗ Deck Machinery

Marine & Naval Hydraulic Deck Equipment

Winches, davits and marine hydraulics — the shared engineering beneath the gangway’s mechanism.

↗ Aircraft Access

Aircraft Access Ladders & Passenger Steps

The aviation sibling — the same safe-access discipline, pointed at a parked aircraft.

↗ Naval Line

Naval Steering Gear & Rudder System

The naval machinery line this access equipment belongs beside.

Browse all Neometrix product lines.

Get a quotation

Send the berth
and the tide.

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

Enquire — marine gangway Capability sheet (PDF) +91 7777 876 876

ISO 9001 / 14001 ENGINEERED TO ORDER — MARINE GANGWAY & ACCOMMODATION LADDER TELESCOPIC SHORE GANGWAY · ISO 5488 ACCOMMODATION LADDER · PONTOON ACCESS · INSTALLED · LOAD-TESTED · CERTIFIED ENGINEERED IN NOIDA · INDIA

Board the ship. Whatever the tide.

The gap moves all day.

Tide, draught, lines

Luff, telescope, roll

To the safe-access rules

Span, ride, protect.

The Structure

The Mechanism

The Shoe & Interface

Control & Safety

Reference access, built to the berth.

Where ship access goes wrong

One problem, the access you need.

Telescopic / Articulated Shore Gangway

Ship’s Accommodation Ladder

Floating-Berth & Pontoon Access

Refit, Replacement & Load-Test

Where it gets them aboard.

Common questions.

The marine line from Neometrix.

Marine & Naval Hydraulic Deck Equipment

Aircraft Access Ladders & Passenger Steps

Naval Steering Gear & Rudder System

Send the berth
and the tide.

Similar Products

Share This Page

Board the ship. Whatever the tide.

The gap moves all day.

Tide, draught, lines

Luff, telescope, roll

To the safe-access rules

Span, ride, protect.

The Structure

The Mechanism

The Shoe & Interface

Control & Safety

Reference access, built to the berth.

Where ship access goes wrong

One problem, the access you need.

Telescopic / Articulated Shore Gangway

Ship’s Accommodation Ladder

Floating-Berth & Pontoon Access

Refit, Replacement & Load-Test

Where it gets them aboard.

Common questions.

The marine line from Neometrix.

Marine & Naval Hydraulic Deck Equipment

Aircraft Access Ladders & Passenger Steps

Naval Steering Gear & Rudder System

Send the berthand the tide.

Similar Products

Share This Page

Send the berth
and the tide.