Wednesday, April 15, 2015

UNSY 501, Assignment 3.4, Unmanned Maritime Vehicles




Source Article:
Woodards, Shantee.  (2015, January 30).  Annapolis firm helped find plane that crashed near Jamaica last year.  Capital Gazette.  Retrieved from http://www.capitalgazette.com/news/ph-ac-cn-eclipse-salvage-0130-20150130,0,7621583.story


Manned search and rescue and search and recovery platforms are valuable assets in these critical missions.  Unmanned maritime vehicles (UMVs) enhance rescue and recovery operations and augment manned platforms in these important missions.  UMVs provide valuable capabilities with their persistent presence and ability to deploy in situations where manned platform may not be able to.

In search and rescue missions, time is a critical factor.  Victims may last for weeks without food and only a few days without water.  Depending on the environment and the state of health the victim finds him/herself in, this time period can be considerably shortened (Bryant, 2008, p. 2-3).  Assuming a scenario in which a victim does not possess survival supplies, this is the time period rescue personnel have to work with.  Depending on circumstances of the rescue operation the area to be searched may be vast and difficult to access.  Rescue assets are finite resources and must be carefully committed to maximize the chances of success.  There may be cases in which despite careful asset management, there are too few platforms, and victims are not reached soon enough.  Manned platforms must consider factors such as crew rest and meals, which will affect the lengths of time for which they can operate.  Unmanned vehicles can augment manned rescue platforms.  Additional vehicles can assist in searching a wider area and be risked in areas which are too risky for manned platforms.  Unmanned also are not limited by crews that need downtime for rest and meals.  UMVs, in particular, would be valuable in maritime rescues beneath the surface.  In these scenarios, there are the aforementioned time critical factors with food and water.  In the underwater environment, there is an additional factor of oxygen supply.  A human being will last for approximately 3 minutes without oxygen (Limaye, 2013).  Victims must be rescued before this scenario is reached.
 
In search and recovery missions, time is not as critical a factor.  However, there are the same inherent limitations to manned platforms as in rescue missions.  The same benefits that unmanned platforms bring to rescue missions can also be applied to recovery operations.  A greater number of searchers increases the chances of success.  A recent example was an operation to locate the wreckage of an aircraft that crashed near Jamaica on September 5, 2014.  Months had passed since the accident but in January 2015, an unmanned underwater vehicle (UUV) built by Phoenix International and operated by the Eclipse Group Inc. located the wreckage.  After locating the wreckage, the search team turned their findings over to investigators.  Woodards (2015) reports that Steven Saint-Amor, managing director of Eclipse Inc, stated:

I get a lot of raised eyebrows. [People say] 'What a terrible job you would have to perform,'" Saint-Amour said. "I counter that it's actually incredibly satisfying, because associated with the victims is a family. They want their loved ones back and they want to know what happened. If we can help them find some closure, that's an incredible feeling to walk away with.

The family of Larry and Jane Glazer, the victims of the September 2014 crash, thanked Eclipse Inc. for allowing them to feel closure in the aftermath of the tragedy.  UUV operations similar to this example conducted by Eclipse Inc. can not only provide a valuable resource to accident investigators but also provide emotional relief to families of victims.

 
References:
Bryant, C.  (2008, February 11).  How long can you go without food and water?  HowStuffWorks.com.  Retrieved from http://adventure.howstuffworks.com/survival/wilderness/live-without-food-and-water.htm



Limaye, T.  (2013, August 2).  For how long a person can survive without oxygen, water & food?  Just for Hearts.  Retrieved from http://www.justforhearts.org/2013/08/for-how-long-a-person-can-survive-without-oxygen-water-food/

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