This is the third consecutive year of the event which showcases the local marine industry.
Boat enthusiasts can head to the Victoria Marina for on-the-water displays from Guernsey boat suppliers. Meanwhile, exhibitors will be housed on the Crown Pier where visitors can find food vans and even a karting simulator.
Kicking off at midday today, the show will feature motorboats, ribs, yachts, kayaks, paddle boards and more with advice on “all things nautical”.
Visitors will have the chance to look around some of the boats on show with an opportunity to buy. They can also find out more about new engines, having work done on an existing boat and sourcing new electronic and safety equipment.
Entry is free and the event will run until 16:00 on Sunday.
This year’s show has been organised by the Guernsey Marine Traders Association LBG.