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Fisher Offshore's HydroDigger, together with its integrated Launch and Recovery System (LARS), provides a safe, secure and highly effective solution to subsea excavation.
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Deployed over a vessel side and operated remotely from its deck, the HydroDigger works by producing a controllable column of water, the pressure of which effectively excavates the seabed.
This minimises or eliminates the risks associated with physical contact, especially around complex subsea assets.
HydroDigger excavation equipment can be rapidly mobilised from our network of Fisher Offshore bases and agents worldwide.
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By employing real-time sonar monitoring, the HydroDigger enables precision excavation both within constrained areas and over long distances. This makes it ideal for :
SEABED PREPARATION
- Sand wave levelling
- Burial of seabed obstructions
- Glory hole excavations
INSPECTION REPAIR & MAINTENANCE (IRM)
- Deburial of subsea assets
- Rock dump removal
- Channel maintenance
- Location and burial of dropped objects
PIPELAY
- Lay trenching
- Freespan and crossing corrections
DECOMMISSIONING
- Exposure of piles and drill templates
- Burial of redundant structures
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See the HydroDigger in action
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