Which documents prove that a boat is compliant?

For a pleasure craft covered by European regulations, the most important documents are the EU declaration of conformity, the owner’s manual, the builder’s plate and the WIN number. The declaration of conformity states that the boat meets the requirements applicable when it was placed on the market.

The owner’s manual provides useful information for safe use: load limits, recommended number of people, starting precautions, maintenance instructions and points to watch in the event of an incident. To better understand the technical reference points on board, you can also read our guide to the anatomy of a boat.

What is the WIN number and how is it structured?

The WIN, or Watercraft Identification Number, is the boat’s identification number. It is permanently affixed to the hull, often on the starboard side of the transom or as close as possible to the stern depending on the configuration.

Its structure is standardised over 14 characters. In the example FR-BEY41000C303, FR indicates the country, BEY the manufacturer, 41000 the serial number, C the production month, 3 the last digit of the year of construction and 03 the model year.

This number should not be confused with the engine serial number. On this point, you can read our guide to finding your boat engine serial number.

What does CE marking on a pleasure craft include?

In general, CE marking applies to pleasure craft from 2.50 m to 24 m placed on the market or put into service in the European Union under the regulatory framework. It refers to a set of design, safety and information requirements.

The builder’s plate notably indicates the manufacturer’s identity, the boat’s design category, the maximum load and the maximum number of people. This category does not tell you where you can go in all circumstances, but it provides information on the sea and wind conditions for which the boat was designed.

Which papers are needed to register, buy or sell a boat?

When buying or selling, the documents usually expected are the bill of sale or invoice, the registration certificate when available, the pleasure craft form for certain procedures and the new owner’s identity documents. Depending on the situation, other documents may be required, especially in the case of importation.

A well-documented boat is easier to resell and helps avoid unpleasant surprises. Inconsistencies between the plate, WIN, engine and papers should therefore be checked before finalising a transaction.

Who has priority between a motorboat, a sailing boat and a constrained vessel?

The general principle is as follows: a power-driven vessel should, in principle, keep clear of a sailing vessel. But this simple rule is not enough, as some vessels have a particular status: fishing in operation, restricted ability to manoeuvre or constrained draught.

Priority therefore depends on the type of vessel, but also on its real ability to alter course. This is what separates a rule learned quickly from a genuinely good decision at sea.

What should you do in a collision course situation?

When there is a risk of collision, the right reflex is to act early. The COLREGs require a constant lookout and a manoeuvre that is clear, early and understandable to the other vessel. A small late correction often maintains uncertainty.

In a crossing situation, the vessel required to keep clear must do so clearly. When overtaking, the overtaking vessel must leave sufficient room. To go further on communication at sea, read our article on how a marine VHF radio works.

Which lights and signals should you know at minimum?

A boater should at least recognise port and starboard sidelights, the stern light, the masthead light on a power-driven vessel and the common combinations depending on vessel type. At night or in reduced visibility, these lights help identify another boat’s probable course.

Sound signals are also used to announce a manoeuvring intention or indicate presence. They do not replace watchkeeping, but they make navigation more understandable.

What speed should you observe near the shore and in channels?

In the immediate vicinity of the shore, speed must remain low. Within the 300-metre band and in marked channels, the commonly stated reference is a speed under 5 knots, or about 9 km/h. The boat must not plane.

This is not just about a number displayed on a screen. A boat travelling too fast near the coast creates wake, surprises other users and reduces reaction time.

Can you navigate in a marked swimming area?

A marked swimming area is not a free navigation space for motorboats. When an area is strictly reserved for swimming, it must remain protected from vessel traffic.

The skipper must identify the markers, locate authorised channels and avoid any improvised course through the area. It is a simple point, but one that causes many incidents during the summer season.

What should you check in ports, anchorages, protected areas and regulated zones?

In a port or when approaching one, the priority is to be predictable, cautious and able to stop quickly. Port entrances, narrow passages and anchorage areas often require short manoeuvres, with little space and heavy traffic.

You should also check maritime prefectural orders, port regulations, anchoring restrictions, protected environmental areas and temporary prohibitions. To secure these phases, you can read our guides on mooring a boat, le choosing mooring lines, le choosing fenders, les anchoring techniques et le guide pour choosing the right antifouling for your boat.

What are the obligations when navigating close to a shelter?

When navigating close to a shelter, the required equipment remains the lightest. The idea is that, in the event of difficulty, the boat can reach a place of refuge relatively quickly.

This does not mean you can set off carelessly. You still need basic equipment, a boat in good condition and a reasonable assessment of the conditions.

What changes in coastal navigation?

In coastal navigation, the level of requirement increases. The crew must be able to manage a longer incident, a delayed return or a situation where the coast remains accessible, but not immediately.

At this stage, nautical documents become more important: charts, COLREGs/RIPAM, buoyage references and information specific to the area visited.

What additional requirements apply offshore and deep-sea?

For offshore and then deep-sea navigation, the obligations increase. The boat must be able to cope with a more serious incident without immediate assistance, with more robust communication, survival and autonomy equipment.

At this level, electronic watchkeeping becomes more useful. You can read our article on AIS technology to better understand its value for detection and safety while navigating.

Which equipment should be on board in all cases?

Whatever the navigation programme, there is a common base: one personal flotation device per person, a light-signalling device, a means of towing and a device for dewatering the boat where applicable.

These items respond to very practical scenarios: falling overboard, water ingress, breakdown or need for assistance. For the dewatering system, also read our article on choosing your bilge pump.

What equipment is added when you go farther away?

As you move farther from shelter, regulations add further requirements. The boater must be able to position themselves more accurately, report a difficulty, manage a longer wait and maintain a margin for action.

In practice, omissions often appear here: no compass, no VHF planned, incomplete documentation or equipment present but difficult to access.

Are the kill switch, VHF and liferaft mandatory in some cases?

Yes, some items become particularly important, or even mandatory depending on the type of boat and navigation area. The engine kill switch should not be underestimated on many motorboats, especially if the device must stop the engine when the skipper leaves the helm.

VHF becomes more important as you move away from shelter. The liferaft belongs to the equipment required for more committed navigation.

What are the most common breaches?

Common breaches include missing or insufficient safety equipment, improper use of the coastal band, inappropriate speed near the shore, faulty lights, incomplete documentation or an overly approximate understanding of priority rules.

Many problems do not come from a wish to cheat, but from a boat that is “more or less ready” when it should be genuinely compliant.

What are the consequences if equipment or documents are missing?

An inspection can reveal equipment or document non-compliance. Even without an accident, this can complicate the situation for the owner or operator. Depending on the offence applied, sanctions can become significant.

In other words, navigating without being fully in order with the rules, documents or signalling can cost much more than a simple warning.