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Sailing & Motoring in Fog

You can only measure the visibility accurately if sailing & motoring in fog when you have another object in sight so assume that it is less than you think. It can take time to ‘see’ another vessel as you may not be looking directly at it when it first appears.

Speed in fog

You should be able to stop in half the distance of the visibility because a conflicting vessel will need a similar distance to stop. Slow speed is demanded.

Keeping a lookout in fog at sea

Post a crew member to keep a visual lookout, preferably stationed outside as you will be monitoring the radar and the chart plotter as well as trying to keep a lookout.

Using radar at sea

Radar is an important aid in fog but don’t expect it to pick up all the vessels around you particularly when the sea may be lively and wave clutter obstructs the centre of the display, obscuring small vessels.

Using the autopilot

The autopilot can be vital in fog as it avoids you having to concentrate on the steering and allows you to focus on the navigation. Make sure you know where the disconnect button is in case you need manual steering in a hurry.

Navigation in fog

You will not get many visual clues in fog so you will be heavily reliant on the chart plotter and/or the radar. Use both to check each other as well as the depth sounder.

Types of fog

Radiation fog is the one you get in the early morning mainly in harbours and it should clear when the sun warms things up. Advection fog is found at sea when warm moist air flows over a cold sea and needs a change of wind or sea temperature before clearing.

Sailing in fog

Ideally you should not be under sail in fog. You may not be able to manoeuvre quickly, the sail can obstruct visibility and white sails do not show up in fog.

Safety margins

Allow larger safety margins in fog particularly for making a landfall. Moderate your speed so you can stop or take avoiding action in good time.

Make your boat more visible

Have the navigation lights on even in daylight and if you have a searchlight have that one as well facing forward. The radar reflector should be up and working.

ag Pike began his career as a merchant captain, went on to test lifeboats, and took up fast boat navigation, winning a string of trophies for powerboat races around the world, including navigating Richard Branson's Virgin Atlantic Challenger on the record-breaking fastest Atlantic crossing by powerboat.

About the author:

Dag Pike began his career as a merchant captain, went on to test lifeboats, and took up fast boat navigation, winning a string of trophies for powerboat races around the world, including navigating Richard Branson’s Virgin Atlantic Challenger on the record-breaking fastest Atlantic crossing by powerboat.

He is now a navigation and powerboat journalist in demand all round the world.

Keeping boat records and doing checks

A boat’s records should provide information about maintenance schedules, when major work was done and when equipment was replaced or added to the boat. Without this information you are left guessing when things are likely to need replacing in the future and also what the costs are likely to be.

Man Overboard Drill

How to respond to crew overboard under sail • Keep the MOB in sight • Tack into the heave-to position, do not adjust the...

Nautical paper charts – a reminder of the basics

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The Boatyard Book – a boat owner’s guide to yacht maintenance, repair and refitting

The Boatyard Book is a fully illustrated 224 page practical reference manual that provides advice for boat owners on planning and carrying out annual maintenance, repairs, upgrades and refits of sailing yachts and motorboats, up to 20 metres in length.

Weather forecasting resources and tips

All competent sailors need to have a good basic understanding of how to interpret a weather forecast. They also need to be able to interpret the actual conditions they are experiencing.

How to tackle osmosis

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An explanation of the IALA maritime buoyage systems – IALA A and IALA B

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Rewiring a boat – overcoming the challenges involved

Skippers need to have a basic knowledge of boat electrics, to avoid potential problems and to be able to solve them when they happen.

Seized fixings and fastenings

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Sail care and maintenance – Part 1

When thinking about the care, maintenance and repair of sails it helps to have some understanding of the properties of the ever growing range of modern sailcloth and the fibres they are made from, as opposed to the traditional canvas sails of the past.

Care of boat batteries

Boat batteries need to be kept properly charged, which means never allowing the batteries to discharge below 50 per cent of their total charge. As well as the batteries themselves, keeping a boat’s charging systems in good shape will also help to keep batteries topped up to a higher level of charge.

How to read nautical charts

Whilst most sailors today rely on GPS to find their way at sea, nautical charts are a crucial tool for any sailor to navigate safely and effectively. Here is a reminder of some of the basic steps involved in reading a nautical chart:

Passage planning and pilotage

Passage planning and pilotage help skippers navigate safely from one port to another. A passage plan takes into account all...

Understanding marine sealants & adhesives

Sealants, adhesives and adhesive sealantsThere is a bewildering variety of sealants, adhesives and even adhesive sealants available for...

Essential Yachting + Power Boat Safety Briefing

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How to trim a genoa sail

I recently had two new sails made by Sanders Sails, based in Lymington UK. The first to arrive was the new genoa and it took me a little while to get to know it and learn how to adjust it correctly. Here is an aide memoire for getting to know how to trim a genoa so that it will deliver the best performance.

Sailboat rig checks – Part 1

Sailing boat rigs need to be checked regularly to reduce the risk of rig failure at sea. In part one of Sail boat rig checks we run through a series of useful checks that owners and skippers can carry out.

Sailing Safely at Night – Best Practice

Sailing at night can be a magical experience – the peaceful solitude, starry skies, and gentle lapping of waves create an unforgettable atmosphere. However, nighttime sailing also presents unique challenges and risks that require careful preparation and vigilance. This comprehensive guide will cover essential safety practices to ensure your nocturnal nautical adventures are both enjoyable and secure.

Docking a Motorboat

Docking a motorboat can be a challenging task, especially for beginners, but with practice and attention to detail, it becomes much easier. Here’s a step-by-step guide to help you dock your motorboat safely and efficiently.

Dag Pike’s Boat Survey

We're really pleased to be working with Dag Pike on some great new apps for iPhone & Android. Here'a a bit more about the first app: Dag Pike's...

Competent crew skills: arriving and leaving a berth

Skilled boat handling is needed when entering or leaving harbour. Crew tasks include preparing the mooring lines and fenders before docking and...

Hourly Checks when sailing or motoring

  Hourly Checks Get into the habit of carrying out these checks and both yourself, your crew and your boat will be...

Safety Briefings – leave nothing to chance

Before giving your crew a safety briefing, it is worth considering the specific circumstances of the planned trip, the...

Understanding your boat’s compass

Article submitted by Mike Rossiter, Certificated Compass Adjuster. Since the magnetic compass was first used by the Chinese...

The Round The Island Race 2023

This year’s Round the Island Race turned out to be a really thrilling and competitive event. 1100 boats entered the race, which took place on Saturday 1st July. The race started from the world famous Royal Yacht Squadron line in Cowes UK, with the largest and fastest boats starting first, leaving the rest of us to wait our turn.