REPAIRS and MAINTENANCE

UNDER WATER BLANKINGS & COFFERDAMS

The purpose is to safely and quickly shutting off seawater inlets or outlets below the waterline by divers.
In-water repair is a cost-saving alternative to dry-docking and the only possibility in case of emergency.

We have a range of different products:

Pneumatic Plugs with Bypass, Size Range (ø mm): 90-125; 125-175; 175-225; 205-255; 225-325
Quickly inserted into any hole in the hull (including stern tube) and 100% watertight guaranteed

We provide a fast response afloat for any gate valve removal or hull repair.

Cofferdams fall into three main categories:

1. Fully enclosed ‘top hat’ type cofferdams used for a variety of repairs where an area needs to be sealed off from the sea or water environment
2. Man entry cofferdams used where engineers or technicians need to have dry access to equipment that cannot be repaired in the wet
3. Open bottom or hyperbaric cofferdams used where a dry space is required to carry out a repair below water, but that can be carried out by a trained diver.

APPLICATIONS

Applications for cofferdams are as wide and varied as can be imagined and typically include:

• Permanent Class approved insert plate hull repairs
• Replacement of hull mounted fittings i.e. logs, sounders, gate valves, etc.
• Replacement of stern seals
• Repair and replacement of tunnel thrusters
• Replacement of rudders and stabilisers
• Repairs to concrete structures i.e. docks, jetties etc

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