A three-cabin cruiser on the Port Vell pontoons
The Sealine C390 is among the under-twelve-metre motor cruisers in Barcelona International Boat Show's official 2026 on-water catalogue. The boat measures 11.99 metres overall and has a 3.85-metre beam, making it a useful choice to examine for Leisure Boat Guide readers interested in family coastal travel without stepping into the larger luxury-yacht sector. Its defining idea is a light-filled, enclosed saloon that opens extensively toward the cockpit.
Visitors to the 14–18 October exhibition can compare the C390 directly with open sports boats that give more space to sunshine but less protection when the weather changes. The C390's sliding glass rear wall is intended to turn the saloon and cockpit into connected spaces, a concept that should be tested aboard rather than judged solely from promotional imagery.
A main deck that changes with the weather
The builder describes a single-level living arrangement between the saloon and cockpit, with a galley conveniently accessible from both. That layout can help with family meals and reduce the amount of movement required to carry food or drinks outdoors. Options include an exterior grill and a hydraulically operated bathing platform, adding flexibility for afternoons at anchor.
A wide opening needs to be closed and secured correctly when the boat is underway in uncomfortable conditions. Owners should ask how the door mechanisms work, where rainwater drains, and whether galley equipment can be safely stowed. A concept that looks spacious in a marina needs to remain practical when moving through choppy coastal waters.
An unusual amount of cabin accommodation
Sealine advertises three double cabins and two bathrooms, each with a separate shower, for the C390. Owners who need fewer berths may instead configure the third cabin as a walk-in wardrobe or storage area. That flexibility addresses a common dilemma for compact cruising boats: guest space is attractive, but families living aboard for longer trips often need more room for provisions and personal effects.
The builder quotes a maximum speed of around 34 knots, dependent on propulsion and loading. Such a figure is useful as a broad indicator of planing capability, not a promise of a particular passage time. Fuel use, noise, sea state and comfort can matter far more than an occasional maximum speed during a real coastal holiday.
What to check before choosing a configuration
A buyer should walk through the cabin access arrangements, inspect engine-room service space and establish whether the intended berth can accommodate the boat's beam. The optional third-cabin storage conversion may be preferable for a couple, while a family travelling with children may value the extra berths. Electrical capacity, heating and shore-power arrangements are also relevant to extending the cruising season.
Barcelona offers the chance to inspect a recognised model, not confirmation of a brand-new 2026 world premiere. Price, equipment packages and delivery availability require current dealer information. For smaller-boat owners, the key question is whether the C390 delivers enough sheltered living space to make regular overnight cruising genuinely convenient.