Posted on Aug 4, 2016
SN Greg Wright
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Going overboard is a scary thing, particularly in an ocean. I can attest to this when a small 2-man sailboat I was on flipped. Both I and the other guy (a PO1) were tossed clear, then the boat righted itself, as it was made to do. We both had life jackets and were good swimmers, so we were fine. But, on larger ships, what does the crew do when someone goes over?

If someone observes the Sailor go over (the situation with the greatest odds for survival for the poor bastard) the person is to immediately shout ‘MAN OVERBOARD TO PORT (or STARBOARD)’ as loud as possible and repeatedly until s/he hears it picked up by others. The initial person is to point, AND KEEP POINTING without ever taking their eyes off the victim for the duration of the rescue, as best they can. Next, someone will immediately throw life rings overboard. These typically have dye markers and salt-water-activated chemlights (or strobe lights) attached to them. If the victim is lucky enough to be wearing a life vest, (contrary to popular belief, the vast majority of professional sailors on large ships, Military or Civilian only wear life vests for specific evolutions) nearly all of them have whistles attached. If they were that lucky, you can be sure you’ll be hearing that.

Since most modern large ships can take significant distances to stop, even with full stop (or even reverse), it’s generally not practical to simply stop and go looking for the victim. Instead, the bridge team, upon hearing the man-overboard, will maintain the speed they’re at, and put the rudder hard over IN THE DIRECTION THE PERSON FELL overboard. (Hard over means, as far as it will go, typically 35 degrees on most ships). This accomplishes two objectives -- it kicks the stern away from the person (hopefully in time on big ships), which is important in order to lessen the likelihood of the victim being sucked into the screws, and it sets up the next required evolution: a Williamson Turn, which is a maneuver named after Naval officer John Williamson, who came up with the technique. The helmsman will hold the rudder hard over until the ship is 60 degrees off the original course, and will then swing the rudder hard over to the opposite direction. When the ship is roughly 20 degrees off the reciprocal course, the rudder is put amidship (zero degrees) and the vessel will coast to the 180 reciprocal. Slight rudder adjustments will be made to ensure that the ship arrives upwind and alongside of the victim. Life boats will then be launched to recover the victim, if all goes well.

It should be noted that on most large Navy ships that have helo’s embarked, they will likely go that route, (or both. Though I doubt a Carrier would do the Williamson. Perhaps some Navy SM’s can comment).
Edited >1 y ago
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Responses: 29
MSgt Mark Bucher
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Very cool and informative post Greg
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PO2 Rev. Frederick C. Mullis, AFI, CFM
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They get wet!
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SFC George Smith
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most interesting ...
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PO2 Marty Sharpe
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As i stated below the only time I saw the Williamson done for real was on Bon Homme Richard CVA 31. The person in the water wound up at the stem of the ship and was picked up by a helo. I was totally amazed that the OOD was that good.
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PO2 Marty Sharpe
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The diagram is a Williamson Turn. When done correctly the man overboard will wind up directli forward of the stem of the ship with the ship at a dead stop. I saw it done once and it is really amazing that the officer with the con can put that much ship up next to a human and not run him over.
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PO2 Marty Sharpe
PO2 Marty Sharpe
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BTW the time I saw it done was on a carrier. You never never go to backing bells with a man overboard.
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PO2 Marty Sharpe
PO2 Marty Sharpe
>1 y
My original posts on this were on my iPad and could not read all of the original post. i don't want to come across as a know it all. From now own I will investigate further before responding. Apologies if I offended anyone.
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SN Greg Wright
SN Greg Wright
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PO2 Marty Sharpe - No worries, PO2! I wasn't offended in the least. We're all here to share what we know.
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PO2 Marty Sharpe
PO2 Marty Sharpe
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SN Greg Wright - Thanks actually I do try and keep a low profile.LOL
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TSgt Joe C.
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Good information SN Greg Wright.
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PO1 William "Chip" Nagel
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Your worst nightmare, We practice and practice Man Overboard for a damn good reason. It is so easy and hopefully the lookouts are doing their job otherwise your suitability odds suck. I love diving, I love swimming but I've seen some of our Kitchen Trash Brown Paper Bags hit the water and just get mauled by sealife. Disturbing. I love he Sea, I love he Ocean but I am plenty aware of how treacherous it is.
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Capt Seid Waddell
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Edited >1 y ago
Interesting. With aircraft it is 90°/270° turns to reverse course. I wonder why it is different for ships; to intercept the previous course sooner?
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PO2 Marty Sharpe
PO2 Marty Sharpe
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To return to the exact point the man is in the water.
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PO2 Mark Saffell
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Except on an Aircraft carrier. If flight ops are going on the helo or the DD's perform the rescue. If no flight ops are going on we slam the ship in reverse and still the Helo's perform the rescue or one of the escort ships. Carriers like The Enterprise dont like those hard turns so much.
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PO2 Marty Sharpe
PO2 Marty Sharpe
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But they can do them.
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