The unit, which weighs more than 18 tonnes and costs 800,000 euros, collects sea lettuce from the water without picking up sand and other debris.
In its clean form, the seaweed can be used as natural fertiliser or even turned into compost.
Infrastructure Minister Eddie Noel said that the machine was scheduled to be put on a boat to Jersey on 3 September, and that some logistical issues were being addressed.
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