Are you looking for something nautical related? Our directory is an extensive list of courses and places associated with the marine industry. Hop over and search now.
We believe every day’s a school day on a boat! That’s why we built Nautical Know-How, dedicated to answering your questions. Even better, if it can’t answer your question immediately, you can request it, and we’ll add it to our knowledge base.
This part defines the lights and shapes each type of vessel must display.
Lights serve three distinct purposes;
– Presence – awareness of a vessel,
– Heading – which way the vessel is travelling,
– Status – any special status the vessel has.
Shapes are the daytime equivalent of status lights. Black, three-dimensional geometric shapes, usually hoisted on a mast.
Side & Stern light Probably the best-known lights, the side and stern lights allow an onlooker to determine what aspect of a vessel they are looking at. Standard across all vessels, they divide the water around the boat into three distinct arcs. This allows the onlooker to determine which aspect they are viewing, which is…
The lights prescribed in these Rules shall have an intensity as specified in Section 8 of Annex I to these Regulations so as to be visible at the following minimum ranges: This rule outlines the minimum distance any navigation lights should be visible from. Masthead lights must be visible from a greater distance than side…
Any vessel is considered underway regardless of type when not anchored, made fast to the shore, or aground. Therefore, it must display lights to enable an onlooker to determine what aspect they can see. These are its side and stern lights, with some tweaks and minor exemptions depending on vessel size. Lights to be displayed…
A vessel constrained by her draught may, in addition to the lights prescribed for power-driven vessels in Rule 23, exhibit where they can best be seen three all-round red lights in a vertical line, or a cylinder. Any vessel can be constrained by its draught; the bigger the vessel, the greater the draught, the deeper…
Pilot vessels have identifying lights; however, they don’t have any specific privileges under the rules. As far as the rules are concerned, they are treated as power-driven vessels. A pilot vessel is likely to be seen alongside or leading another vessel with a special status, such as constrained by draught or restricted in its ability…
Where it is impracticable for a seaplane or a WIG craft to exhibit lights and shapes of the characteristics or in the positions prescribed in the Rules of this Part she shall exhibit lights and shapes as closely similar in characteristics and position as is possible.
Once a vessel becomes actively engaged in fishing, its definition changes. Until then, it is regarded as a power-driven vessel. This term can only be used to describe vessels that are either: Sea-angling boats and others whose gear does not restrict their manoeuvrability cannot define themselves as fishing vessels. Day shapes shown by fishing vessels…
This rule starts Part C: Lights & Shapes and introduces the overarching principles of when we should display appropriate shapes or lights based on the rest of the section. It also tells us that this part’s rules apply in all weather. Day shapes By day, vessels that need to declare their definition use shapes. This…
This rule covers many situations, with multiple vessels potentially becoming either one of these types.
If you belive the Earth is flat, you're about to fall of the end...
If you belive the Earth is flat, you're about to fall of the end...
What are you looking for?
Our 1% commitment
Funding permanent carbon removal
My Sailing Course contributes 1% of every Stripe payment to help promising carbon removal technologies move from the lab into the field.
1% of each paymentA £100 payment creates a £1 contribution from us.Selected for impactStripe works with scientific advisers to select early-stage carbon removal projects.Our contribution is automaticWe make the contribution after every eligible Stripe payment. Customers do not need to opt in or pay anything extra.
Stripe Climate commitments fund the development and purchase of carbon removal. They are not carbon offsets or credits attached to an individual order.
My Favourites
Notifications
MY SAILING COURSE
Hello, Visiting Sailor!
Welcome to My Sailing Course. Where's this adventure going to take you?
Your account details are encrypted in transit and your password is never displayed or stored by this form. By continuing, you agree to our Terms & Conditions and acknowledge our Privacy Policy.
Before you sail away…
Join free to save your favourites, unlock bonus learning resources and keep everything nautical close at hand.
MY SAILING COURSECreate your account
Join the My Sailing Course community with one secure account for your courses, profile and support.
✓
Welcome aboard!
We've successfully created your account. Hold station for a few moments and you will be returned to the page.