Electro-hydraulic watertight sliding doors and hatches for cargo, passenger and offshore vessels, supplied with the power pack, controls and bridge panel as one package.
A sliding door goes where a hinged door will not: at the foot of a bulkhead, in a passageway that has to stay clear, or anywhere the door has to shut against a head of water on a command from the bridge. The construction is deliberately simple, the drive has a long service record behind it, and if the ship loses power the door can still be closed by hand pump from either side of the bulkhead.
Sizes and rating
| Clear opening | 2200 × 1200 mm maximum |
|---|---|
| Standard widths | 600, 800, 1000, 1100 and 1200 mm. Other sizes to order. |
| Head of water | 25 m on cargo and passenger vessels; 50 m for offshore service |
How it closes
| Drive | Electro-hydraulic power unit |
|---|---|
| From the bridge | Remote closing |
| At the door | Opening and closing from either side of the bulkhead |
| Without power | Hand pump, fitted both sides of the bulkhead |
| Options | Closing on stored accumulator energy; hand pump mounted above the bulkhead deck |
Closing time
| On the power unit | 20 to 40 seconds |
|---|---|
| On the hand pump | Up to 90 seconds |
Alarms and indication
Audible and visual warning at the door itself, audible and visual repeat on the bridge mimic panel, and a visual indication at the control station above the bulkhead deck.
What comes with the door
- Door unit, blasted and epoxy primed
- Control block
- Bridge mimic panel
- Spare parts
- Yard drawings in AutoCAD
- Service manual
- Class certificate
A hand pump with tank and indicator lights for mounting above the bulkhead deck can be added.
Related types
- Low-sill watertight doors
- A0 and A60 fire-rated watertight doors
- Watertight doors with electric drive
- Hydraulic hatches and covers
Classification
Unit certificates are raised per project to ABS, BV, DNV, LR, RINA, RMRS and others on application.
Commissioning, testing and in-service repair are handled by our own service teams working out of Singapore across Malaysia and Indonesia.
Recent work
Four hydraulic watertight hatches, 2.5 metres square and certified to ClassNK, built for the U-stern of the HX118 heavy lift vessel under construction at Seatrium Nantong. Shown with cylinders, linkage and cleating gear fitted and set, ready for shipment.
