The salvage boat "Louise" originally served as a tug boat/line boat in Honolulu Harbor for many years for Young Brothers Hawaii, a longtime and successful operator of tugboats and barges in the Hawaiian Islands.
The filming location where the salvage boat "Louise" is docked is the Makai Research Pier.
Peter Carew, in the role of Jentry wears eye glasses, a mustache and a wig. In his two previous roles, "Will the Real Mr. Winkler Please Die" and "One Born Every Minute", he appears naturally as partially bald.
One of the few times in the series that McGarrett wears sunglasses, which he does when he's on a boat near the end.