Every man overboard drill I did as a younger sailor was in warm water on a sunny day, throwing a fender over and circling back at leisure. None of them prepared me for the truth of the Channel, which is that the person in the water has minutes, not the comfortable margin a fender allows, and that the cold takes their ability to help you save them faster than you can usually get back to them. If you cruise the Channel out of Cherbourg, the Cotentin or the Channel Islands, the cold rewrites the whole MOB problem, and the drill has to be built around the clock the cold sets.
The clock the cold sets
The framework that matters in the Channel is 1-10-1, and it describes a falling person, not a textbook hypothermia case. One minute of cold-water shock: the instant they hit the water the cold triggers an enormous involuntary gasp followed by hyperventilation, and if their face is under during that gasp they drown in seconds. Ten minutes of meaningful movement: over the following ten minutes or so the cold strips the strength from the arms and legs, so they cannot grip a line, climb a ladder or even hold a thrown loop. One hour to unconsciousness: only after that does genuine hypothermia put them under.
The water makes this real. The Channel runs around 7 to 9 degrees in winter, climbs slowly through spring, and even in high summer is typically 14 to 18 degrees inshore. Worse, the most violent cold-water shock peaks in water between roughly 10 and 15 degrees, which is the Channel for most of the sailing season. That friendly-looking flat water in May is squarely in the kill zone. The full physiology, and how to survive it from the casualty's side, is in hypothermia and cold-water risk in the Channel; this article is the recovery side, from the boat.
The brutal arithmetic: you have perhaps ten minutes before your crew can no longer help in their own rescue, and a cold, heavy, unresponsive person is far harder to lift than one who can still grab a line. So the drill is not just about getting back to them, it is about getting them out while they can still cooperate.
The drill, in order
The instant someone goes over, the response is mechanical and everyone aboard should know it cold.
- Shout "man overboard" and point. One person becomes the spotter and does nothing else, ever taking their eyes off the casualty, because a head in a Channel chop disappears in seconds and is almost impossible to refind.
- Hit the MOB button on the plotter and throw flotation immediately, the danbuoy and horseshoe, even if it lands short. It marks the spot and gives the casualty something to reach for.
- Get back to them by whatever method you have practised. The quick-stop, where you tack or gybe at once and motor back, keeps you close, which is what cold water demands. The slower figure-of-eight wastes minutes the casualty does not have.
- Make the approach into wind and stop with the casualty just upwind of the beam, near the lowest point of the side deck, killing the engine before they are anywhere near the propeller.
Speed matters more in cold water than the elegance of the manoeuvre. The textbook approaches were designed for warm water with time in hand. In the Channel, prioritise getting alongside fast, even crudely, over a perfect approach that takes an extra two minutes.
The lift is the hard part
Getting back to the casualty is the part everyone practises. Getting them out is the part that defeats crews, and it is where cold water bites hardest. A waterlogged, hypothermic adult in full clothing can weigh well over a hundred kilos of dead lift, and someone who has been in cold water for a few minutes cannot climb. You cannot pull most adults straight up the topsides by hand.
You need a mechanical method rigged and ready before you sail, not improvised over the side. The options that work on a typical cruising boat: a halyard to a winch with a strop or the casualty's own lifejacket lifting becket; a dedicated recovery sling or a Lifesling-type device that you motor around the casualty and then winch; a boarding ladder if the casualty still has the strength to climb, which in the Channel they often will not after a few minutes; or a section of the guardrail dropped and a ramp or scoop arrangement. Whatever you choose, rig it and try lifting an able crew member on a calm day, because the day you find out it does not reach or the winch angle is wrong is the day you cannot afford to.
Lift them horizontal if you possibly can. A casualty who has been in cold water and is then hoisted bolt upright can suffer a sudden circulatory collapse as the water pressure comes off their legs, so keeping them as flat as the gear allows during and after recovery genuinely matters.
Once they are aboard
The danger is not over when they are on deck. Get them out of the wind and the wet, strip the sodden clothing gently, and wrap them in dry layers and a survival bag with the head covered, insulating them from the cold deck beneath as well as above. Warm sweet drinks only if fully conscious, never alcohol, and do not rub the limbs or plunge them into a hot shower, because rapid surface rewarming can drive cold blood to the core and stop a cold heart.
Watch for the casualty who seems fine and then collapses: as chilled blood circulates back from the limbs the core temperature can keep falling after recovery. Keep treating and watching even once they look better. The recovery and the broader tidal MOB picture, including how the Channel's strong streams carry a casualty away from the boat, is covered in man overboard in the tidal waters of the Channel, and anything beyond mild, quickly recovered shivering is a call to CROSS: a Mayday or PAN-PAN on VHF channel 16, with the procedure in a medical emergency at sea in France.
Prevention is the real drill
Every experienced Channel sailor will tell you the same thing: the best MOB technique is never to test it, because cold water makes recovery so marginal that you cannot count on it. Lifejackets on and clipped on whenever anyone is on deck on passage. Jackstays rigged bow to stern so you can move the length of the boat without ever unclipping. One hand for the boat. Crotch straps and spray hoods on the lifejackets so the airway stays clear through that first lethal shock minute. And a crew brief before every passage covering the drill, where the recovery gear lives, and the 1-10-1 clock, so that if it happens nobody wastes the one minute that counts.
I run the drill every season now, in the actual gear, off the actual boat, in cold-ish water with everyone watching. It is humbling every time. The casualty is heavier than you expect, the chop hides them faster than you believe, and the winch lift always takes longer than the warm-day version. That humility is the point. In the Channel, crew overboard is not a manoeuvre you perform, it is a race against the cold that you are usually losing, which is exactly why you clip on and never have to run it for real.
