Take care and be sure your ROV can supply the Hyd flow required for the Merlin. It is a lot bigger than the Super zip jet (or Zip Jet ultra) which only needs 40 – 50 litres/min, but but the super zip jet just doesn’t move enough soil.
The spec sheet for the Merlin states 65 – 110Ltrs /min but in reality you cannot do any real dredging until you supply at least 90Ltrs /min. For your application unless you want to take days over the task you really need to be operating this at the max end of the scale.
You state a triton – a standard Triton will not run the Merlin (at least not for long!), The Triton XL can run it, just. You really need to watch the El motor temp. The Triton XLS will do the job, but not from the Aux pump, it needs to be on the main system Hyds. There are very few dirty work packs that can cope with the Merlin.
Scanmudring, GTO and Proserv have similar units.
If I was doing the spec I would look very closely at the GTO SUBSEA dredge system. Although It isnt mounted on the, It has a seperate umbilical for power. The ROV just carries the dredge hose. Still the vessel time saved pays for the unit.
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