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View Full Version : MAN OVERBOARD >this is a drill<



Dave Hussey
05-21-2009, 10:04 AM
I would like to ask opinions regarding the best techniques for getting a person safely back aboard a sailboat...

Years ago, my wife and I took a safety course in preparation for chartering a sailboat here in Seattle. There were about three couples and the instructor aboard if I recall correctly, on this overnight learning cruise. Everything was covered from navigation to cooking...and then out of the blue, the instructor tossed a life jacket in the water and yelled MAN OVERBOARD...everyone looked at the instructor in disbelief, shock, or dumbstruck ignorance and waited for him to say something...it seemed like a long and pregnant pause....until he spoke again and said "WELL???WHAT ARE YOU GOING TO DO? YOU JUST LOST A MAN!" and thus began a rigorous training exercise in saving a person who has fallen over the side....

DO YOU KNOW WHAT TO DO? a very sobering question.

CaptDan
05-21-2009, 12:01 PM
DO YOU KNOW WHAT TO DO? a very sobering question.

It sure is. That's why it's important to practice MOB drills periodically. And even then, should the unthinkable occur, rescuing a person who fell overboard is very difficult - particularly in adverse conditions.

Most sailing schools teach the Quick Stop and Quick Return techniques. USCG/Navy drills involve the 'Williamson Turn.' They all have some things in common, and a few that don't. The MAIN thing is to train your crew to know what to do, and the first thing is to keep a vigilant lookout on the victim, while marking the closest place of entry - with an MOB pole and tossing Type IV PDFs and/or life vests.

Here's what I do with folks who sail with me:

I carry a fender that I've named 'Ivan' (long story, don't ask.:rolleyes:). I go through the recovery steps with my crew: Then at some point of my choosing, without warning, Ivan gets tossed. This is what's supposed to happen:

1. Warning an MOB has occured, providing immediate clear indication of which side of the vessel the victim fell (port,strbrd,bow,stern).

2. The person who made the initial warning becomes the Lookout, keeping an unwavering eye on the victim's position, pointing, throwing cushions, PFDs, MOB pole towards that vicinity. Any other crew to aid the Lookout.

3. Helmsman - noting compass course - executes a tack initiating a reciprocal course towards the victim's position. Upon sighting the victim, he continues another 4 boat lengths past the victim then tacks upwind of victim, heading into irons, slowing the boat, (It helps to have doused the jib at this point.)

4. All hands on deck - recovery side - ready with gear (attached life ring, Lifesling, line lead to winch, boat hook), though in the case of 'Ivan,' all that's needed is the boathook.)

Sound easy? It's not. Worse, though it may look good once mastered, the Quick Return under sail may not help save a person's life. Why? Well..

1. In a lot of cases, victims strike their heads on something as they fall over board. They may not even be conscious when they hit the water.

2. Chaos is difficult to manage in the real world.

3. Retrieving a person - conscious or unconscious - is MUCH harder than picking a fender out of the drink with a boathook. Usually, it takes a couple of tries to get into recovery position.

That's why - if it were me - I wouldn't worry about looking good; my primary focus is recovering the victim. That means turning on the motor, and getting to that victim, upwind, and in recovery position IMMEDIATELY, dousing sail if possible. Every second wasted is one moment further towards dire outcome.

And that, my friends, is why I NEVER let people fall off my boat.;)

Just my thoughts. YMMV.

Capt Dan G>E35II "Kunu"

msFootrope
05-21-2009, 08:40 PM
Great question Dave! And great response Dan. I have to admit, although we've talked about it, we've never actually practiced it. What we have done is when we've lost a ball cap overboard, or passed by an interesting piece of flotsam or jetsam, we immediately drop sails, turn on the motor, and return to whatever it is we lost/saw, and then attempt to recover it and bring it aboard the boat. We've recovered hats, a dingy oar, and a fender or two, and even a nice floating cushion, but with one exception, Craig has always been driving the boat and I've been the one using the boat hook. Although we've discussed it often and practiced it a bit, I certainly hope that it's not Craig who requires rescuing! :eek:

rwthomas1
05-21-2009, 11:54 PM
My thinking leans towards taking every effort to keep people on the boat to start with. We sail with Mustang rigs on outside the bay and jacklines rigged if its anything other than sunny. The bottom line is I'm "oversized" and my wife is never going to get me back on board by herself if I was unconscious. Couple that with the fact that she simply isn't strong enough to do other tasks on the boat and I can justify anything to keep people onboard. The water temps are still in the low 50's here. Doesn't take long even at that temp to take you hypothermic.

RT

CaptDan
05-22-2009, 12:00 PM
we immediately drop sails, turn on the motor, and return to whatever it is we lost/saw, and then attempt to recover it and bring it aboard the boat.

:eek:

That's a good start. ANY practice is better than none, IMO.

The only thing I'd add is, the elements of 'surprise and muster' are lacking.
In other words, it's one thing to return to a floating object at your leisure, quite another to do so when pressed out of necessity.

In one of my regular commercial captain's jobs, periodic MOB drills are conducted where participants 'play act' like chaotic passengers. A fender is tossed and - in one example - a female crew play acts like a mother whose child fell overboard. I'm talking screaming, out of control behavior - you know - like in the real world.:p The helmsperson/crew are then put in a position of trying to deal with the chaos while, at the same time, attempting to discover where the victim might be and getting there quickly. It's a very interesting excercise to say the least. ;)

Anyway, I'm with Rob: don't let anybody fall overboard in the first place.

Capt Dan G>E35II "Kunu"

Emerald
05-22-2009, 01:43 PM
I've used the (blown off) hat overboard scenario as one of our practice methods. Part of what is good about this is you never know when someone's hat is going to blow off, or which direction, and the hat is often hard to spot and track due to its small size, and depending on material, it may be sinking, so your time is limited.

Loren Beach
05-22-2009, 02:55 PM
I've used the (blown off) hat overboard scenario as one of our practice methods. Part of what is good about this is you never know when someone's hat is going to blow off, or which direction, and the hat is often hard to spot and track due to its small size, and depending on material, it may be sinking, so your time is limited.

We have successfully retrieved a Tilley hat. (And they can blow off, no matter what the ad sez.)
But then, no one abandons one of those, no matter what the sea condition. :cool:

Loren

Emerald
05-22-2009, 03:10 PM
But then, no one abandons one of those, no matter what the sea condition. :cool:

Loren

Yep - you got that right! :egrin:

sleather
05-22-2009, 04:40 PM
I've used the (blown off) hat overboard scenario as one of our practice methods. Part of what is good about this is you never know when someone's hat is going to blow off, or which direction, and the hat is often hard to spot and track due to its small size, and depending on material, it may be sinking, so your time is limited.

That's been done a few times unintentially.......at night.......dark blue CG hat (that a freind gave me).......and solo. Hat was rescued in each situation. ;)

msFootrope
05-22-2009, 06:52 PM
The only thing I'd add is, the elements of 'surprise and muster' are lacking.

We hate to lose our favorite sailing caps and the wind has often taken Craig's off his head unexpectedly. As one other person just mentioned, you never know when that's going to happen and they are hard to spot and sink rapidly. I consider this relatively good practice and we've only lost one or two in the process (and we've had to retrieve many a hat over the years). But we are also of the belief that it is better to stay aboard the boat.

Oh and one other thing - We always wear our life jackets, which will definitely improve our chances of rescue. Our life jackets also have the built-in harness and I have no qualms about hook a halyard to somebody to bring them back aboard.

Dave Hussey
05-23-2009, 11:21 AM
OK, good responses!
I am somewhat disappointed there were so few however. :esad:

Our instructor taught us what I think is an excellent technique which brought us up to our 'victim' quite rapidly. By jibing the boat, and coming up to the victim on the leeward side, you are able to return to the MOB more quickly than making two tacks...I have practiced it several times (in good conditions, albeit) and sailing short handed, I prefer it over tacking...but in strong winds, or with more people in the cockpit, tacking sounds like the way to go (more people to tend to sheets, starting the engine, dropping the sails, etc.).

Rule number ONE: DO NOT fall overboard!
Rule number two: READ rule number ONE :egrin:

tooblaaave
05-25-2009, 11:23 AM
Jibing in heavy seas can be a hairy experince, soI am told. My brother is an amazing sailor, coast guard and a lot of experience. He said Jibing is great in calm, even moderate sea. In heavy sea tacking is safer and gives more contol of the boat. I practice both. Nic

Randy Rutledge
01-05-2010, 03:02 AM
My best MOB practice session was sailing with a water-skier friend. Ken pointed out an object about 20 degrees off the starboard bow. I replied we won’t hit it then I decided to make a turn around the object that looked from a distance to be a throw able cushion.
I decided to circle it as in a MOB maneuver. The object was a painted one gallon milk jug with a 25 lb catfish on a six foot line. I spent the next 45 minutes maneuvering the boat alongside the jug just to have it go under the boat and reappear on the other side of the boat or 30 feet away in any direction. This was one of the most fun and challenging maneuvering events I have ever taken part in. I was totally surprised at how maneuverable Rumkin my E29 really was. I learned that by backing the jib and a full wheel to the direction the jib was driving the boat I could turn her almost in place or stall her where I wanted. I wish there was a way to recreate this without the harm to the fish (I released the fish that day after showing it to the guys at the dock so they wouldn’t think me crazy). I have even thought it would be a great competition to have at the sailing club, a jug-fish rodeo.
Many of the things I found to work well were not the standard s approach or any of the other standard MOB approaches. Up wind I would spin the boat with a wider than my normal 30 second delay turn I have used in race starts and stall in the wind right at the person.
100 feet of line on the stern rail secured by a highwayman’s hitch (a knot for securing a line to a rail that when released comes completely clear of the rail, also good for towing and can be released under load) can be thrown for the MOB to catch hold of and with the boat stalled or circling can be hauled in.
I have only seen one real life MOB, this was at Dauphin Island race Mobile Bay 2009. The lifeline broke and in the drink he went. The boat just did a simple turn and he was back onboard in 45 seconds. As per Capt Dan’s instructions all available hands were at the rail ready to hoist him aboard.
This tread needs to stay alive and active so all of us and our crew and guest can stay alive.

Sven
01-05-2010, 03:14 AM
Practical sailor has an article on recovery procedures in the January issue.

The article reminded me that we still don't have a Wichard emergency boarding ladder on board. With our freeboard that is a deficiency that needs to be corrected.


-Sven

Emerald
01-05-2010, 08:34 AM
I was just chatting with Glyn the other day regarding mounting steps on the rudder of my Independence 31 for emergency boarding (with an emphasis on solo sailing). The conversation went exactly as I anticipated - neat idea, but reality is it's about the worst place to try to board in any type of sea, plus the angle of our rudder on the transom gets pretty funky towards the top (leans aft which is the wrong direction for easy climbing). The solution I am pursuing that Glyn pointed out is a midships mounted ladder with a method of releasing it from the water. They can get pricey, but what's a life worth?

Sven
01-05-2010, 10:22 AM
Hi David,


I was just chatting with Glyn the other day regarding mounting steps on the rudder of my Independence 31
...
The solution I am pursuing that Glyn pointed out is a midships mounted ladder with a method of releasing it from the water. They can get pricey, but what's a life worth?

First remember to hit the MOB button on the GPS before you fall overboard :egrin:

I've looked at Glyn's steps and I think he is right that you would have to be pretty agile to use them successfully. I suspect that adrenaline might help the agility along and his steps are certainly a lot better than nothing.

The Wichard ladder is the kind that you deploy from the water and while the list price seems to be $160 or so I've seen it for as little as $100 at http://www.landfallnavigation.com/swbl1.html .


-Sven

Emerald
01-05-2010, 10:58 AM
That Wichard ladder is neat and the price is certainly affordable. I'd been thinking of some of the nice folding, permanently mounted stainless ladders and had missed this product completely.

Has anyone climbed up one before? I know that things that are swinging and/or flexible can be more difficult than they look to climb up.

Randy Rutledge
01-05-2010, 12:17 PM
David
Do you tow a length of line with a knot or small loop in the end to allow you to catch and stay with the boat or do you hope the boat will round up? A long line dragged from mid ship with loops tied with an overhand knot at 12” spacing from the rail to the waterline would increase the chances of getting back on the boat greatly, I would suggest the line from rail to waterline be ¾” while the wet portion should be no smaller than ½”. When boarding this way when you get to a stanchion grab it and swing up to allow a foot catch on the deck and bridge up this is easier than trying to continue to climb the rope ladder or loops.
This is making me think there needs to do more than just recovering “Ivan the fender” we need to practice hauling a person onboard and being hauled onboard and for the daring try hand over hand up the rope get aboard unassisted. Your friends onboard should get a laugh out of watching this.
An acquaintance slipped on the deck and fell overboard and had to climb a line while dragging in the water to get back on the boat one night at sea while his wife was sleeping.
I don't think many of us tow a safety line when solo.

We should.

ref_123
01-05-2010, 04:07 PM
Years ago, our instructor taught us another approach that returns you to MOB place quickly and does not require adjusting sails. When a person or object falls overboard, you have to bear away to the broad/beam reach and then upon sailing for 6-8 seconds tack into the wind and heave-to. This allows you to drift to MOB position very slowly and retrieval is helped by a "slick spot" that the boat creates. The person needs to be hooked up quickly though as the boat still moves.

Works well on fenders and trowables. Never (Thanks God) tried it on a person. Lost a dummy head at night between Santa Barbara and Fry's harbor during the practice - damn strobe stopped working 10 seconds after it hit the water...

Regards,
Stan

Emerald
01-05-2010, 11:11 PM
Hi Randy,

I managed to have crew on all my sails this past season, so I haven't been pulling a tow line, yet. It's been on my mind that I need to rig one up. I'm sailing out of Annapolis and often wonder if it will be possible to keep a tow line deployed for much of the summer sailing due to the heavy boat volume - I've had problems trolling with people cutting across my stern and taking my fishing lines - have had to cut them as the reel has taken off at a zillion RPM - wonder what it would be like if one of these yahoos hit a tail of floating poly rope being towed behind. Any chance of being liable for damages if someone snagged a line being towed for self rescue - do you need to mark it?....

I agree that MOB practice would be best to do with a person in the water to pull out. My big dilemma is that even though I've had luck with gathering crew recently, I am often the only one on board who really has any clew about how to sail the boat. I've been wearing an auto-inflating harness/pfd at all times in case I go over and am watching everyone sail off into the sunset :esad:

Sven
01-05-2010, 11:31 PM
My big dilemma is that even though I've had luck with gathering crew recently, I am often the only one on board who really has any clew about how to sail the boat.

So you tell them that the price for coming along on your beautiful boat is that you'll get shove them overboard when it is least expected and then do your very best to come back and pull them out of the water, to see if you can.



-Sven

bigd14
01-06-2010, 12:51 AM
On our little Ranger 22 we had one of those rope ladders with the plastic steps on it. It attaches in a similar manner to the Wichard one shown above.

I decided to try to see how easy it was to re-board the boat. The R22 has very little freeboard, but it still took me 20 minutes to get back aboard. And I couldn't do it alone. After flailing around for a long time trying different methods, my wife finally had to rig a line to a winch to help me out (I'm about 225 wet).

It was 85 degrees out with water temps in the mid 60's, but I was exhausted and cold by the end of it and had severe bruises where my toes got pinched between the ladder and hull. The flexible ladder bends underneath the hull and you cannot get very good purchase to step up. Then when you do get purchase and pull up, there is nowhere else higher up to reach with your hands to pull yourself further up and then the ladder starts to slide sideways and you are left hanging on with one hand. Once that arm gets tired, you're done for! I imagine adrenaline would probably help get you back aboard, but if its cold and you have been in the water for awhile, there's no way you could do it by yourself. It's really humbling.

When I finally launch my E27 with its much higher freeboard, its going to have a flip down stern ladder reachable from the water, a Lifesling, and probably one other method of getting back aboard. At least one method will be easy for the person in the water to do by themselves.

Doug

Randy Rutledge
01-06-2010, 01:28 AM
Something like that, throw the over and start the training.

I don’t think dragging a line in heavy traffic is a good idea, besides you can offer a round of beer to the crew of boat that rescues you and gets you back to your cooler in a high traffic area. If off shore or night sailing the tow line should be a must.
This is the one violation of my life rule “prepare for the worst possible situation and plan for the best” I just don’t plan to go overboard, famous last words. I have a hank-on Jib and sail changes in high wind and waves over the bow are normal activities, MOB could be like grounding “those that have, those that will and those that will again.” I do think that a recovery practice at anchor will be the minimum I will do this summer. The 29 has enough freeboard to make her almost impossible to board without help or a ladder. This discussion has made me plan to make a rope boarding ladder that will hang from a stanchion to provide assistance, I also think I will try hanging the bosun’s chair as a step and see how that works. The hang over ladder that bayonet mounts to the starboard deck takes far more time to deploy than I want someone in the water.
The Bosun’s chair off the end of the boom on a rerouted reef line that on my boat is blocked near the end of the boom and runs to the mast where there is a winch that could be used to hoist them aboard is another thought.
Should we set up a survey to see how many have taken a swim? I personally have only seen two and a friend told me he went overboard but not from my boat.

Sven
01-06-2010, 11:37 AM
The flexible ladder bends underneath the hull and you cannot get very good purchase to step up. Then when you do get purchase and pull up, there is nowhere else higher up to reach with your hands to pull yourself further up and then the ladder starts to slide sideways and you are left hanging on with one hand.

Our 27 foot mahogany sloop had a teak rope ladder, probably a bit more rigid than your rope ladder with plastic steps. I know exactly what you are talking about when you say that the ladder goes under the hull and you definitely want it closer to amidships than the stern for that reason.

When we were diving (jumping) off the sloop we'd forgo the ladder because it simply didn't help that much. I know I couldn't do it today, without practice and some exercise for a year or two, but the trick was to shoot up out of the water far enough to grab the gunnell with at least one hand and then swing one foot up over the side and roll up on the deck. We didn't have lifelines so there were no stanchions to get in the way of the roll.

As I said, I could not repeat that swimming start jump and roll today (especially not with our 4' freeboard !) but I would try the same technique with the Wichard (which in on the infamous list). I would use the ladder to get a grip on the stanchion and then get one foot up on the gunnell for the roll, making sure there wasn't a stanchion in the way.

Talking is easier than doing so I'll definitely try it once we have the ladder.


-Sven

Emerald
01-06-2010, 11:57 AM
Talking is easier than doing so I'll definitely try it once we have the ladder.


-Sven

Right you are on that, and one of my concerns is how exhausted will the MOB be and will the person in question have any strength left to make the climb. This is where the life sling comes in, but you need someone on board to deploy it and hoist you back in - not good for the solo scenario....

windjunkee
01-11-2010, 07:26 PM
I'm a proponent of the 'quick stop'. Immediately go head to wind, luff the sails, fire up the engine and go upwind of the MOB, luff again and drift down for the retrieval. We have a horseshoe, strobe and MOB pole on one side of the stern pulpit and a lifesling on the other.

If we can't act immediately (i.e. under auto pilot), we'll do the figure 8 and we practice both techniques at least once a season with all potential helmspeople.

Jim McCone
Voice of Reason E-32 Hull #134
Redondo Beach, CA

ignacio
01-13-2010, 03:41 AM
I took some classes in Berkeleyon J24's (very tender boats) with no instuments (aside from a compass) in 15-20 knots of wind in the SF Bay during the summer, and right in the slot that blows in wind throug the Golden Gate. Waves tended to be big enough to add to the excitement. Each class meeting required signficiant MOB practice. This was the procedure we learned.

After learning of the MOB and appointing a lookout/throwing a PFD:

1. Regardless of the point of sail as of the time of the MOB, we were immediately to get onto a beam reach and sail for approximately 4-5 boat lengths away from the MOB.

2. Then, we'd execute a 225 degree (approx) tack from a beam reach to a deep broad reach on the other tack, and obviously heading downwind from the MOB and letting the main all the way out for the new point of sail. The jib is allowed to get backwinded during the tack and isn't touched.

3. The helmsman then determines a time to head upwind on a close reach to the MOB. Once the turn is made to head upwind, the jib is let out completely (jib sheets under control so that they don't caught up in anything) and only the main is used to get a little speed while heading upwind to the MOB on a close reach.

4. The victim is then approached slowly and kept on the leeward side of the boat, the main is let out all the way (zero sail power, but there if needed), and the tiller is all the way to leeward to stall the boat.

Once that all gets done, then presumably we throw lines and start hauling the person aboard.

The trick to the above was gauging the approach angle to the MOB, and then controlling speed. Too fast, and we'd pass the MOB or tack accidentally when we put the tiller over to leeward to stall the boat. Too slow and we'd end up drifting away to leeward of the MOB. It absolutely had to be on a close reach, and speed control was obviously a function of the conditions.

As I've considered this method knowing there are others, I think I've apperciated that

a.) it doesn't require gybing, which could be nasty in chaotic conditions (people and the elements),

b.) it doesn't require motoring, which may not help anyway in certain conditions, at least on the J24's,

c.) the practice forced us to pay attention to the indicators of boat speed and point of sail, which we should be good at anyway, and

d.) it keeps the sails up for immediate use, if needed.

Obviously, lots of practice was needed. However, having the sails immediately available allowed us to simply try again, and we were back to the MOB within 1 or 2 minutes tops. The practice was valuable, and it became second nature to execute the maneuver. I like the idea of having someone hysterical on board...maybe I'll add that to my next set of MOB pratice.

Hope folks find this useful.

Ignacio

steven
01-13-2010, 12:30 PM
I am very concerned about this topic and appreciate that the group is discussing it here.

I been taught, practiced and taught Ignacio's procedure as well as others procedures. Also, I have been in the water being picked up under this-is-not-a-drill conditions.

Reguardless of procedure for getting back to the MOB, I have become negative on the idea of approaching with vessel-to-weather. I realize not every agrees, including some textbooks.

Nevertheless, I think it is just too easy for the boat to blow over the person in the water, pulling them under the hull or bashing them in the head - especially in a confused or quartering sea. I have been a MOB - fortunately conscious and not in any immediate trouble - but almost killed by the rescue boat rolling/heaving onto me. On another occasion I tried to board a small racing keelboat from the leeward side - the boat was blown over me and my life jacket pinned me to the underside of the hull.

Also, at the very end of the approach and during retrieval, the skipper - back at the helm - can loose sight of the MOB. Is the MOB under the boat? I think vessel-to-leeward improves the the odds that MOB is not.

Moreover, if for any reason the rescue vessel needs to continue to maneuver (e.g., have to break off and go around again) it will likely have to go somewhat downwind - can't do that with a person in the way.

Of course, conditions vary widely and a pickup on the leeward side - or over the stern - could be the best in a specific situation. And there are specific risks associated with the vessel-to-leeward approach. But I think it is generally preferable.

Discussion welcome, of course.

ignacio
01-13-2010, 01:42 PM
Hi Steven,

The leeward-side pickup idea of the MOB often nagged at me, specifically for fear of what you mentioned (and now confirmed for me) below. Is this based on the premise or assumption that having the vessel to weather creates a sort of "safer" or more "controlled" zone to begin the process of getting the MOB on the vessel?

I'm a newbie to sailing (took the classes just last summer), so this is great info. to learn from the more experienced salts in the group!




I am very concerned about this topic and appreciate that the group is discussing it here.

I been taught, practiced and taught Ignacio's procedure as well as others procedures. Also, I have been in the water being picked up under this-is-not-a-drill conditions.

Reguardless of procedure for getting back to the MOB, I have become negative on the idea of approaching with vessel-to-weather. I realize not every agrees, including some textbooks.

Nevertheless, I think it is just too easy for the boat to blow over the person in the water, pulling them under the hull or bashing them in the head - especially in a confused or quartering sea. I have been a MOB - fortunately conscious and not in any immediate trouble - but almost killed by the rescue boat rolling/heaving onto me. On another occasion I tried to board a small racing keelboat from the leeward side - the boat was blown over me and my life jacket pinned me to the underside of the hull.

Also, at the very end of the approach and during retrieval, the skipper - back at the helm - can loose sight of the MOB. Is the MOB under the boat? I think vessel-to-leeward improves the the odds that MOB is not.

Moreover, if for any reason the rescue vessel needs to continue to maneuver (e.g., have to break off and go around again) it will likely have to go somewhat downwind - can't do that with a person in the way.

Of course, conditions vary widely and a pickup on the leeward side - or over the stern - could be the best in a specific situation. And there are specific risks associated with the vessel-to-leeward approach. But I think it is generally preferable.

Discussion welcome, of course.

Dave Hussey
01-19-2010, 11:38 PM
Ignacio,
another advantage of not using the engine is the fact that the propeller is not turning, so the hapless MOB will not be churned into chum during the attempted rescue. That is a good thing. Hmmm..., but then there's still that problem Steve mentioned, of the danger of blowing over or trapping the MOB, and this needs to be addressed somehow. It seems that the conditions of the sea, the wind, whether under sail or motoring, and the number of people on board, all need to be considered in how to react to a MOB...
1. a means of locating the MOB (ie, MOB button on GPS, MOB pole, life jacket/ring/cushion tossed over, spotter
2. situation awareness, ie, wind direction, sea condition, tactics
3. get to the mob any safe way possible
4. get the victim aboard (need more ideas)
5. get the victim dry and warm
6. assess and correct flaws in assumptions.

whew!