Dredging is a very unique area of marine construction, generally engaged in replenishment or renourishment of beaches or the maintenance of shipping channels. The dredge worker, even though he is engaged in employment aboard ships or derrick barges, usually what they call a fleet or a tendon fleet of vessels, is entitled to all the rights that any other maritime worker, crew member of a vessel be entitled to, including the Jones Act. And the duty of the vessel owner, in this case the dredge owner, to provide a seaworthy vessel.