Frantmar III

Frantmar III has carried three names. Heesen launched her in 2008 as Sibelle, one of the yard's 4400 series, drawn in-house with Omega Architects for the styling inside and out. She became G3 in 2017, and after a sale in May 2026 she took her current name. Her hull is aluminium and semi-displacement, so she is built to move quickly between anchorages rather than to cross oceans slowly; in the Greek islands, that means more time at the next bay and less time underway.

The 2017 refit is what defines her today. What used to be the garage, aft on the lowest deck, is now a beach club where a running machine, an exercise bike, a rower and free weights share the space, so a morning session finishes with a jump into the sea. A new sun deck was added with a Jacuzzi at the front, and a large screen up there turns it into an open-air cinema at night. The small Williams and most of the toys moved to the bow, which was rebuilt to hold them, leaving the stern clear.

On the outside she is easy to recognise: the hull is painted silver-grey with a red line and a black one just above the water, the upper decks are white and the bow stretches long and low. On the bridge deck, a table for ten sits under an overhang dotted with tiny spotlights that look like stars after dark. Removable awnings on every deck let the crew decide how much shade each space gets. Light timber and neutral colours keep the interior calm.

The layout has one useful quirk for families. The owner's suite is on the main deck, and next to it is a study that the crew can set up as a bedroom with two fold-down bunks for small children, or as a treatment room, so the youngest sleep a door away from their parents. The other cabins, two doubles and two twins that convert, are on the lower deck.

She now spends her summers in Greek waters, with the Cyclades, the Dodecanese and the Ionian on her 2027 programme. Frantmar III suits a family with small children, or friends who want to cover several islands in a week and spend their afternoons on toys. Anyone looking for a long-range explorer, a classic wood interior or a western Mediterranean summer should choose another boat.