My first night crossing was an accident of arithmetic. A 90-mile passage at five knots does not fit inside a June day with any margin, so we left Yarmouth at six in the evening and arrived off Cherbourg as the sun came up. I was terrified for the first three hours and converted for life by the last three. There is nothing in cruising quite like the moment the loom of a French lighthouse lifts over the bow and the night's work pays off.
A night Channel crossing is not harder than a day one. It is different, and the differences are learnable. Here is what actually matters once the light goes.
Why cross at night at all
Two honest reasons.
The first is distance. Many of the good crossings, the Solent to the Cotentin, the south Devon ports to Brittany, are 70 to 100 nautical miles. At a cruising five to six knots that is twelve to eighteen hours, which simply will not fit inside daylight outside high summer. You either accept a night passage or you do not go.
The second is the lanes. The Channel's shipping carries 400 to 500 vessels a day through the Dover Strait scheme alone, and they do not sleep. But at night the big ships are easier to read, not harder, because their lights tell you their aspect and rough heading at a glance long before you could judge it by eye in daylight. Once you trust the lights, traffic at night becomes a maths problem rather than a fright.
Reading the lights, the only bit you must know cold
Learn these before you leave the dock. Not on the chart table at two in the morning.
- A power-driven vessel shows a white masthead light, a red light on her port side and a green on her starboard. Big ships show two masthead lights, the after one higher, and the line between them tells you which way she is heading.
- Red on your right, she is crossing right to left and you may be the give-way vessel. Two reds in line, you are looking straight up her port side. Green over red, "sailing vessel ahead". Red over red, "a captain is dead", which is the old mnemonic for a vessel not under command.
- A ship showing both red and green together with a white light below is coming more or less straight at you. That is the one that focuses the mind.
The single most useful skill is taking a compass bearing on an approaching light every couple of minutes. If the bearing does not change and the light gets brighter, you are on a collision course. That rule has not changed in two hundred years and it works in the dark exactly as well as in daylight. AIS and radar are wonderful and I would not cross without them, but the bearing on the steering compass is what saves you when a fishing boat with non-standard lights appears where the screen said nothing was.
Crossing the lanes after dark
The rules do not change because the sun went down. A sailing yacht crossing the Traffic Separation Scheme still crosses on a heading as near as practicable to a right angle to the lane, under Rule 10. You hold the heading, you let the tide set you sideways, and you make the ground back in the inshore zones.
What changes at night is your information. Use it all:
- AIS shows you the big ships by name, course, speed and closest point of approach. Set your guard ring and let it work.
- Radar catches what AIS misses, including the small craft and fishing boats that are the genuine hazard in the inshore zones.
- Your eyes confirm both. A target on the screen and a light on the bow that agree is a target you understand.
Cross each lane as its own decision. Get fully through the first, look around, then commit to the second. CROSS Gris-Nez and CROSS Jobourg watch the central Channel around the clock on VHF 16 and their working channels, and they will call you if your radar plot looks wrong. That is reassuring, not threatening; they would much rather talk to you early than scramble a lifeboat later.
A watch system that crew can actually keep
A tired skipper is the real danger on a short overnight, not the ships. With two adults, three hours on and three off through the dark hours works and leaves both of you functional at dawn. With more crew, shorter watches keep everyone sharper. The off-watch sleeps, properly, in a bunk, not dozing in the cockpit feeling noble.
Some hard-won rules from my own boat:
- Lifejackets and harnesses on, clipped on, from dusk to dawn. No exceptions, no negotiation. A man overboard at night in Channel tidal water is a recovery you may not make; the man overboard in tidal waters problem is brutal even in daylight.
- Brief the handover. Position, traffic, the next mark, what the off-watch should be woken for. Write the log every hour so the next person inherits a picture, not a blank.
- One person on deck is always clipped on and always knows where the boat is. If you have to go forward, wake someone.
- Red cabin lights and dimmed instruments. It takes twenty minutes to get your night vision and two seconds of white light to lose it.
The kit that earns its place
A night passage needs gear a day sail does not. A working radar reflector or, better, an active transponder so the ships see you. A handheld torch on a lanyard and a powerful spotlight for the sail and for picking up unlit marks. Spare warm layers, because the temperature drops more than you expect once the sun is gone and the wind comes off the water. Flask of something hot. And a passage plan written down, with tidal gates and waypoints, that the half-asleep next watch can read without doing sums.
The other half of a good night crossing is leaving on the right day, which is a whole subject in itself. Before you commit to an overnight, work through how to pick a Channel crossing weather window, because the wrong forecast turns a magical passage into a long, cold ordeal. And read the crossing the English Channel by boat overview for how the night legs fit the routes.
The dawn
The thing nobody tells you is how good the arrival feels. You will have spent the night reading lights, taking bearings, threading ships, and somewhere around four in the morning the eastern sky will go grey, then pink, and a coast you crossed an entire sea to reach will harden out of the haze. The kettle goes on. The night watch hands over to the morning. And you motor into a French harbour having genuinely earned your breakfast.
Do it once, properly prepared, and you will look for excuses to do it again.
