EORI is an Economic Operator Registration and Identification. This is required if you are a person or trader carrying out custom activities in the EU. Newminster House, Bristol BS1 1LT Open 24/7 (+44) 01823 335666
Vessel is a catch-all term, like 'watercraft', which describes any floating object used for the carriage of people or goods. Generally smaller and less complex vessels are 'boats', whilst larger and more complex vessels are 'ships'. As a general rule, you can put a boat on a ship, but you can't put a ship on a boat.
In the example above, the red vessel is the give-way vessel and should alter course and speed to pass behind the blue vessel. If the skipper of the blue vessel does not observe the red vessel taking action to avoid collision, then he/she must take the required action to avoid a collision.