SOS Marine Recovery Ladder is made from dayglow polyester mesh (neon yellow) offering two means of exit from the water. Able crew can climb the integral ladder rungs. Injured, disabled, or hypothermic crew can be parbuckle lifted aboard using your halyard, davit, or block & tackle.
The dual–purpose design of the Recovery Ladder enables rescue of a disabled, injured, or hypothermic crew, who either cannot or should not try to pull himself from the water using the ladder rungs.
To make this recovery, fasten a halyard or block and tackle to the bottom–most point of the Recovery Ladder. The MOB floats into the pocket formed by the Recovery Ladder, or onboard crew may pull him into the pocket with the Reelsling recovery line.
Crew on board then raises the halyard to recover the MOB. The recovery ladder gives 2 to 1 mechanical advantage to the hoist by virtue of the ancient principle of parbuckle lifting.
This is a slower process than ladder ascent, but safer for hypothermic crew, as it helps avoid circum–rescue collapse.
The lower body is compressed by the hydrostatic effect of the water—the so-calledG suiteffect—and blood is diverted upwards into the chest cavity. Blood volume becomes progressively depleted by a physiological reflex causing excessive urination and pulse rate slows as hypothermia develops. Vertical lifting causes immediate loss of theG suiteffect. The already reduced blood volume instantly pools in the lower body and the heart rate cannot increase to compensate for this sudden loss of central blood volume. As a result, circulatory shock and sudden death can occur. This is calledcircum–rescue collapseand is a recognized major hazard of vertical lifting when recovering someone who is hypothermic. For further reading on this, and other medical matters related to marine rescue, consult therescuer’s bible,Essentials of Sea Survival by Golden and Tipton. This text should be in every sea rescue organization's library. –Bob Wright, MD, Director, Intensive Care Services, St. Vincent’s Hospital, Sydney, AUS
You May Need a Block and Tackle
Ahead of need, consider whether you will need a multipart purchase for mechanical advantage in hoisting your crew aboard. In use on sailboat or powerboat, fasten a halyard or block and tackle to the webbing loop at ladder’s bottom. On a sailboat, hoist your crew aboard with windlass or halyard winch. On a powerboat, you may need a block and tackle at the ready.
It’s Soft for Safety
The ladder is not rigid but soft, made of fabric and webbing. On any boat with swimstep, sail or power, using the Recovery Ladder sidesteps injury caused by the swimstep smashing down on, or rapidly ascend into, struggling overboard crew. A standard rigid boarding ladder can also gravely injure crew when the boat rolls or pitches during recovery. The soft construction of the SOS Marine Recovery Ladder makes recovery safer.
Deploy From Mesh Sleeve
Rig the mesh sleeve at side of deck to keep Recovery Ladder ready to use and tidy.