How to read nautical charts
by Simon Jollands | Crewing skills, Navigation, Preparation
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:
Learning about diesel engine maintenance
by Safe Skipper | Boat Maintenance, Preparation, Yacht ownership
Marine diesel engines are internal combustion engines that are designed specifically for use in maritime applications. These engines are commonly used in a variety of watercraft, ranging from small boats and yachts to large ships and vessels. Learn about marine diesel engine maintenance courses.
ESSENTIAL BOATING APPS >>

Safe Skipper App – a practical guide to managing risk at sea
Fast access to essential boating tips, emergency guidance & MAYDAY call support. Record vessel details & crew information. Save favourites & location. Be better prepared!

US Inland Navigation Rules App
Complete Inland Navigation Rules for all U.S. inland waters and the Great Lakes.
With 100+ specially produced explanatory illustrations and captions, for all recreational and commmercial vessels navigating US intracoastal waterways and the Great Lakes.

ColRegs: Navigation Lights & Shapes App
Provides skippers and crew of sailboats, power boats and commercial vessels worldwide with a quick reference tool to identify vessels in their vicinity and the activities they are engaged in.

Knot Bible App - Knots Made Easy
Learn the 50 essential boating knots for mooring, anchoring and rigging, with step-by-step photos, save favourites, search, clear instructions and practical Knot Scores.

ColRegs: Buoys & Lights App
All the essential quick reference knowledge you need to quickly recognise and interpret the buoys and the light markers and improve your overall boating skills and safety on the water.
As specified by the International Association of Lighthouse Authorities (IALA) Systems A & B.

Boating First Aid at Sea App
This app provides rapidly accessible guidelines for dealing with medical emergencies in a small boat or yacht at sea.
As well as detailing medical procedures the app also provides information on emergency communications.
Take a look at the new features!

ColRegs: Rules of the Road App
All the boating Rules of the Road in our essential quick reference boating app. Search the rules, Save Favourites, continue studying and test yourself! Used by seafarers worldwide.

Start Sailing: Yachts App
Learn the essentials of yacht sailing with 100+ expert illustrations, useful crewing tips, quick search, save favourites, quizzes and reliable offline access.

ColRegs: 3 App Complete Collection
The ColRegs Complete Collection brings together three highly visual reference, learning and revision apps for skippers and crew of sailboats, powerboats, fishing boats and commercial vessels.
You Need To Understand The IRPCS ColRegs To Pass Your Yachtmaster, Master of Yachts and Coxswain Certificate of Competence
Preparing for sailboat cruising
Preparing for a sailing trip entails a lot of planning. In this blog, we take a look at some of the many safety aspects that a skipper needs to consider before heading off on a cruise.
Boat decks and superstructure
The deck of a boat is constantly exposed to the elements and should be inspected on an annual basis. Particular attention needs to be given to the overall condition of deck fittings such as the stanchions, cleats and chainplates.
Steel hull maintenance
A steel boat owner’s biggest enemy is corrosion. You don’t have to worry about osmosis or rotting timbers, instead rust is the number one issue that will keep you awake at night.
Repairing a leaking hull-to-deck joint
Boat Engine Failure – what to check
Avoiding collisions at sea – how to stay safe on the water
2023 Rolex Fastnet Race
Safe Skipper’s Simon Jollands took part in the 2023 Rolex Fastnet Race – a classic offshore sailing event. This is the first of several articles on the race and focuses on the start.
Top Tips For Learning: ColRegs Boating Rules Of The Road
Colregs Boating Rules Of The Road
The International Regulations for Preventing Collisions at Sea (COLREGs) are a set of rules designed to prevent collisions between vessels. They are essentially the “rules of the road” for boats. Some key concepts within the COLREGs include:
Tacking a sailing boat
Cleaning & polishing painted topsides
The gelcoat topsides of a GRP boat can be pampered and restored to their former glory relatively easily when it is ashore. Gelcoat is only a very thin outer layer of the hull, often less than 1mm thick, so you should avoid cleaning it with highly abrasive cleaners, or an-ything that could potentially damage its surface.
Stern gear maintenance
The stern gear of a boat needs to be checked carefully when the boat is ashore as this is something that can only be done when it is out of the water. The same applies for any maintenance and repairs that may need doing, so it is best to check it all over as soon after an end of season lift out as possible.
Stress cracks on GRP boats
It is quite common to find cracks in the gelcoat when inspecting the deck and superstructure of a GRP boat. It is important to differentiate between a gelcoat crack and a scratch.
Passage planning and pilotage
Marine engine electrical system
The typical basic electrical system associated with a marine engine includes a dedicated engine starting battery, a starter motor, a charger in the form of an alternator, a solenoid and some engine sensors and instruments.
Steel and Aluminium Hulls
The two metals used for hull construction are steel and aluminium. These are both very strong materials and will last a long time as long as they are cared for, which primarily means protecting steel boats from rust and aluminium boats from electrolytic action.
Estimating and plotting your position at sea
This post covers how we go about estimating and plotting our position using traditional methods, when out of sight of land – covering Dead Reckoning, Estimated Position, Tidal Streams, Leeway and more…
Understanding your boat’s compass
Capsize – understanding the risks
Fixing position at sea using traditional methods
This post looks at some traditional methods used for fixing a vessel’s position at sea, within sight of land. Electronic fixes using chart plotters are very straightforward to record, but if for some reason a vessel’s electronics are faulty it is essential that a skipper knows how to use traditional methods.
Getting a tow for your sail or power boat at sea or on inland waterways
Pleasure craft safety equipment recommendations
Essential Knots: Sheet bend
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.
Seasickness – how can you prevent it?
Welcome to the Safe Skipper website.
Safe Skipper is run by boating enthusiasts who also have a background in publishing and TV production, design and app development. As well as creating great content for the website, we’ve developed a range of popular boating apps that allow you to get safely out on the water whilst having essential information to hand, covering International ColRegs: Nav Lights & Shapes, Rules of the Road, Buoyage & Lights to knot tying, nautical chart symbols and first aid at sea – all information available to you when on the water, on your phone or tablet, when you need it.
We’re regularly adding new articles to the site, hope you’ll bookmark us and visit again soon.
Before you go, scroll down to our boating quizzes and check your boating knowledge!
Fire prevention on boats
First aid at sea basics
At least one person on board should be trained in first aid and know how to administer the contents of the first aid kit, ensuring there are adequate supplies for the planned duration of the trip.
First Aid Afloat – Jellyfish Stings
Cutless bearing replacement
Cutless bearings can last for many years but if the propeller shaft is out of alignment they will wear through more quickly. If you have noticed a clunking sound when motoring then it could be a worn cutless bearing that is causing the problem.
Jester Challenge 2022 – Sailing single handed from Plymouth UK to the Azores: Part 5 – Boat Management
Jester Challenge – A modern experiment in old-fashioned self-reliance, self sufficiency, and personal responsibility. This is the fifth of a 10-part post where solo sailor, Bernie Branfield, shares his first hand account of his single-handed, 2022 Jester Challenge, from Plymouth, UK to the Azores, in his 26′ Invicta Mk2, Louisa.
Boat Engine Failure – what to check
Jester Challenge 2022 – Sailing single handed from Plymouth UK to the Azores: Part 3 – Preparations
Jester Challenge – A modern experiment in old-fashioned self-reliance, self sufficiency, and personal responsibility. This is the third of a 10-part post where solo sailor, Bernie Branfield, shares his first hand account of his single-handed, 2022 Jester Challenge, from Plymouth, UK to the Azores, in his 26′ Invicta Mk2, Louisa.
Cleaning & polishing painted topsides
The gelcoat topsides of a GRP boat can be pampered and restored to their former glory relatively easily when it is ashore. Gelcoat is only a very thin outer layer of the hull, often less than 1mm thick, so you should avoid cleaning it with highly abrasive cleaners, or an-ything that could potentially damage its surface.
The give-way hierarchy at sea – who gives way to whom?
Boat engine basics
I have just downloaded and am using ColRegs Nav Lights & Shapes app, a brilliant training and reference device
Instructor
Beautifully produced and very simple to use, a cool learning tool
Sailor
Nav Lights & Shapes app – downloaded by 1000s of seafarers worldwide. Just one of our popular boating apps to download from the appstores for Apple and Android devices.
Tidal heights and the rule of twelfths
For those skippers who need to make a quick calculation or don’t have access to specific tidal curves for their location, it is possible to make an approximation using a system called the Rule of Twelfths. This is a simple method used to estimate the height of tide at any given time during the tidal cycle. It is based on the idea that the rise and fall of the tide is not constant, but follows a predictable pattern than can be divided into twelve parts.
Competent crew skills: mooring lines
A five day sailing cruise of the Solent, UK
Essential Yachting + Power Boat Safety Briefing
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.
Understanding boat engines
Irrespective of what kind of engine a boat is equipped with and who does the work, the regular care and maintenance of a marine engine is essential. The most common cause of marine engine failure is widely known to be lack of maintenance.
Sailing into fog – being prepared and staying safe
Most skippers will sensibly delay their departure, if fog is forecast. However, if fog begins to form when you are at sea it is important to be prepared, and know what precautions to take, to help make your vessel detectable or visible in fog and keep the crew safe.
Safe Skipper – crew management tips
Effective crew briefings are a vital part of the good on-board communication that helps everything to run smoothly on a sailing vessel at sea, whether it is cruising or racing.
Boat surveys
Navigating the Unknown: Boating in Limited Visibility
Sailing or Motor Boating in limited visibility, whether due to darkness, fog, or other adverse weather conditions, presents unique challenges for mariners. It requires a combination of skill, experience, and adherence to safety protocols to ensure a safe and enjoyable journey. In this article we will delve into the intricacies of sailing in such conditions, providing insights into preparation, navigation, and collision avoidance.
Safety Briefings – leave nothing to chance
Rudders and steering systems – Part 3
In the third of our three blog articles on rudders and steering systems, we look at how to replace rudder bearings and repair a water-saturated core.
Safety Equipment Checklist for Boats
Keel maintenance and repair – Part 1
Keels are designed to act as underwater foils that generate lift as the boat moves through the water, counteracting the leeward force of the wind and enabling the boat to sail closer to the wind. Keel maintenance and repair is essential for the performance of your boat.
Distress flares – which flare, how & when to use?
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.
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.
Boat electrics inspection checklist
With the boat ashore, here are some recommendations for carrying out a boat owner electrics inspection. Safety is always paramount so remember to do the checks with the batteries off. Wearing a head torch helps, make notes as you go and only tackle a repair if you are 100% sure you know what you are doing:
Marine engine electrical system
The typical basic electrical system associated with a marine engine includes a dedicated engine starting battery, a starter motor, a charger in the form of an alternator, a solenoid and some engine sensors and instruments.
Boat batteries
Under-sized battery banks are one of the key factors behind power failure at sea, as well as the premature failure of batteries, so make sure that your boat battery measures up to the use you want to put it to.


