The Rescu Swim'r is a deployable device that mounts to a ring-buoy or other throwable PFD. When the PFD is launched, the Rescu Swim'r deploys a rudder downward that makes the PFD tow at a 45-degree angle to the boat. Then as soon as the boat slows or is turned toward the man-overboard, the PFD immediately runs up to a 90+ degree angle to the boat. This creates a slow-moving catch-line running directly and slowly 90 degrees to the boat. The victim is contacted by the line/PFD on the first pass, almost without fail, and without bringing whirring steel propellers, or a bouncing multi-ton hull, near enough to ever harm them.
The Rescu Swim'r attaches easily to a life-ring buoy, or horseshoe-shaped throwable Personal Flotation device, via two straps. All throwable devices are supposed to have a length of line attached to them and to the vessel, so that the PFD can be pulled back to the boat after it goes to a victim.
"Deployable" means that when the PFD is stowed against a bulkhead or on a rail, the Rescu-Swim'r is attached to it and stays folded flat. When folded up (in this stowed position) the Rescu Swim'r has a looped-securing-strap that runs through holes in both the mounting fin & rudder fin. A half-loop of your town line then sits in this looped-securing-strap to keep it in place. As soon as there is any tension at all on the tow line (i.e the buoy is put into the water under tow), the half loop of the tow line pulls out of the looped-securing-strap, which makes the looped-securing-strap then pull out of both fins of the Rescu Swim'r. This allows the Rescu Swim'r to pop open and begin guiding the PFD to a position beside the boat.
It is not nearly as complicated as it sounds. It's actually simple mechanical & hydro-dynamic principles arranged in a way that changes the process of recovering a man overboard from a very dangerous and difficult task, to a safe, quick, and easy task.
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