The Dusk Habit: A Ten-Minute Visibility Walk-Round for UK Boats

November has a habit of turning a pleasant afternoon into a grey wash by half past three. One minute you are tidying the cockpit, the next the far bank has dissolved and the pontoon is a row of dim shapes. That is not the moment to discover your starboard sidelight has been out since August.

Visibility is not one purchase. It is a ten-minute habit, done before the light goes, while you can still see what you are looking at. Here is the walk-round I use on UK boats from October through to March, whether that is a yacht in a marina or a narrowboat on a Midlands cut.

Begin at the switch panel, not the lamp

It is tempting to stare at a dead navigation light and assume the bulb has gone. Sometimes it has. Often the fault is a tired switch, a corroded fuse holder or a terminal that has been quietly growing green fur since the summer. Start at the panel. Switch each circuit on and off. Wiggle nothing yet, but look for the obvious: a fuse that has gone cloudy, a blade terminal that pulls off too easily, a switch that feels vague.

Cable terminals are where winter gets in. A smear of petroleum jelly or a proper dielectric grease on clean terminals is cheap insurance. If you find verdigris, clean it back to bright metal, crimp a fresh terminal and heat-shrink it if you can. Do not just tighten the screw and hope. A poor connection makes dim lights, hot wires and intermittent faults that only appear when the voltage drops on a cold evening.

Navigation lights: check them from the helm

For most UK sailors, the legal baseline is COLREGS: sidelights, sternlight, masthead or all-round white as appropriate, plus a steaming light when motoring. For canal boats, the practical baseline is being seen by another boat coming the other way in a bridge hole. Check every lamp from the helm position, not just from the pontoon. A sidelight that looks bright from two feet away can be invisible behind a sprayhood, a cratch cover or a pile of fenders.

If your boat has LED units, do not assume they are immortal. Cheap ones fail, and they can fail in a way that leaves half the fitting dark. If you still run filament bulbs, carry spares. Old-fashioned bulbs are cheap, small and deeply unfashionable, which makes them perfect locker residents.

Reflectors are the low-tech bargain

Retro-reflective tape is cheap and honest. A strip on the dinghy oars, a patch on the lifejacket, a bit on the tender outboard cowling. It does not replace a light, but it gives a torch beam something to find. On a dark pontoon, that matters. Check that existing reflectors are still stuck down and still facing the right way. A reflector that has curled up under a fender is just a small lesson in optimism.

Torch discipline beats torch wattage

A head-torch is the boater's third hand. Get one with a red mode and use it when you are moving around a dark cockpit or a shared pontoon. White light is for finding things; red light is for keeping your night vision and not blinding the person at the tiller. Carry spare batteries or a charged power bank, and know how to lock the switch so it does not glow in your bag all afternoon.

Do not shine a white beam at a lock keeper, a harbourmaster or an oncoming helm. Being seen is not the same as being a nuisance. The aim is to be obvious, not offensive.

Tunnel lamps and canal-specific kit

If you boat on the canal network, a tunnel lamp is not optional glamour. Check the bracket, the cable, the switch and the beam. A lamp that flickers at the tunnel mouth is a distraction you do not need. If yours is serviceable but old, carry a spare bulb or a fused replacement unit. Charge the battery before the trip, not while you are queuing for the tunnel.

Canal boaters should also think about a hand torch for the bow, a couple of reflective bands for crew, and a way to light the towpath when you are mooring after dark. A cheap head-torch left in the cratch is worth more than a fancy one locked in a toolbox.

The ten-minute route

Run this before the light goes:

• Switch panel: every light circuit on, every fuse checked, every switch felt for vagueness.
• Navigation lights: checked from the helm, not the pontoon.
• Reflectors: stuck down, facing out, not hidden behind kit.
• Head-torch: charged, red mode working, spare batteries present.
• Tunnel lamp: bracket sound, cable sound, beam clean.
• Cable terminals: dry, clean and protected.
• Spares tin: bulbs, blade fuses, crimp terminals, tape.
• Crew: lifejacket lights and reflective strips checked.

Spares that earn their locker space

A small tin lives in my boat all winter. It holds a few spare bulbs, a selection of blade fuses, a couple of crimp terminals, a short length of self-amalgamating tape and a small torch. None of it is expensive. All of it turns a gloomy failure into a five-minute fix. Add a spare navigation light bulb if your fittings use one, and a spare fuse for every circuit you rely on. Then label the tin, because a mysterious tin of electrical hope is no use to anyone.

The aim is not to glow like a ferry. It is to remove the cheap surprises. A ten-minute walk-round in the last of the light is a lot better than a nasty surprise in the dark.