Bluegame's BG64 Debuts at Cannes With an 86pc Roll-Cut Gyro

How much roll did the SG40 actually cut on the BG64, and how solid is that number?

Smartgyro says its SG40 gyro stabiliser reduced the BG64's roll by up to 86 percent during commissioning and sea trials, a figure the manufacturer and Marine Industry News both published on the eve of the yacht's Cannes premiere.

The claim comes from two aligned sources: Smartgyro's own news post, dated 1 September 2026, announcing the BG64 installation ahead of its Cannes world premiere, and a Marine Industry News report the following day carrying the same figure and a supporting quote from Carlo Gazerro, Smartgyro's sales manager for Southern Europe. Both describe the 86 percent as a sea-trial result during commissioning of this specific hull, not a laboratory or simulated figure. Gyro-stabiliser makers routinely publish roll-reduction numbers this high, and Smartgyro has quoted comparable results on other installations this year, so the BG64 figure sits inside the pattern for the technology rather than standing out as an outlier claim.

The important qualifier is "up to": an 86 percent cut is a peak result under the sea state and load the boat was tested in, not a number every crossing will repeat. Gyro stabilisers work by resisting the hull's roll motion with a spinning flywheel rather than generating lift like a fin, which makes them most effective at anchor and at low speed, exactly where the BG64's open, near-the-water layout is used hardest. No third-party test house has published an independent figure for this pairing, so the number should be read as the manufacturer's own commissioning result until an owner or a trade title measures it independently.

Why does a gyro stabiliser matter this much for the BG64 specifically?

The BG64 is built around a foldout beach terrace, an oversized swim platform and a flexible bow lounge, spaces that only work as intended if the boat stays close to level at anchor, which is exactly what a gyro stabiliser is best at.

Bluegame slots the BG64 between the smaller BGX63 and the larger BG74 in its range, using the BGX63's hull for what the yard calls a smooth, comfortable ride and borrowing the open architecture first shown on the BG74. At just over 20 metres length overall and 5.3 metres beam, she carries a drop-down side terrace, a wide swim platform and a portside crane for tenders and water toys, plus a bow lounge that converts between sunbathing, dining and a private lounge. Interiors are by Zuccon International Project in a deliberately restrained, contemporary style, with two or three cabin layouts and a helm area partitioned off from the guest social space.

Every one of those spaces depends on the boat sitting still. A beach terrace at the waterline or a bow lounge with guests standing near the rail turns from a selling point into a liability the moment the hull starts rolling at anchor in a beam swell, which is the everyday condition Mediterranean and Caribbean anchorages actually produce. Bluegame CEO Gianguido Girotti has called the BG64 an important step for the yard, and Luca Santella, its head of product strategy, has described the design brief as fitting the full Bluegame experience into a 64-foot footprint. A gyro that holds the boat close to level at rest is what makes that brief work in practice rather than only on a drawing.

What does an owner trade away by choosing a gyro stabiliser over fins on a boat this size?

A gyro like the SG40 stabilises at anchor and low speed, where fins do little, but it costs weight, hull volume and a single point of failure that a twin-fin system does not carry in the same way.

The SG40 unit itself weighs 625 kilograms and measures under a metre in each dimension, rated for boats up to roughly 18 metres and 40 tonnes displacement, sized specifically for a boat in the BG64's class. It draws single-phase 220-volt power and spins to 6,500 rpm to build its stabilising torque, and Smartgyro's 2025 update to the SG40 line was aimed squarely at cutting that power draw and making the unit serviceable aboard the boat rather than requiring a haul-out, a real running-cost advantage over the system's earlier generation. Fin stabilisers, by contrast, do most of their work using the boat's forward speed to generate lift, so they help far less at anchor, which is precisely the condition the BG64's layout is designed around.

The trade-off runs the other way once the boat is moving at speed, where a twin-fin system typically outperforms a single gyro and adds less hull drag. A gyro also occupies a fixed volume low in the hull, on a 20-metre boat already built around open social space rather than machinery room, which is a real allocation of the boat's limited space rather than a free addition. And a gyro is one flywheel doing one job, so a failure removes stabilisation at anchor entirely, where a two-fin system degrades rather than fails outright if one side needs attention. Neither approach is simply better; the choice follows from how an owner actually plans to use the boat, and Bluegame and Smartgyro's own bet, reflected in prior fittings on the BG54, BGX63 and the BGM75 multihull, is that an anchor-heavy, beach-club style of use favours the gyro.

When and where can a buyer actually see the BG64, and how much demand has it already drawn?

The BG64 makes its public debut at the Cannes Yachting Festival, 8 to 13 September 2026, on Bluegame's stand on the Jetee, with three hulls reportedly sold ahead of that unveiling.

Smartgyro shares Cannes with the launch, exhibiting the SG40 and its wider stabiliser range at stand PAN 302, before both companies move on to the Genoa International Boat Show, 1 to 6 October, where Smartgyro takes stand TL10 to TM09 in the Blue Pavilion. Yachting Magazine reported that three BG64 hulls had buyers before the boat was even shown publicly, an order pattern Bluegame has repeated across recent launches and one that suggests the yard's open-plan formula is finding buyers faster than it can build for them.

No owner has taken delivery yet, so there is no independent report from anyone who has actually run the BG64 at anchor, and neither Bluegame nor Smartgyro has published a price for the model or the stabiliser option. For an owner comparing the BG64 against the BGX63 it is built on or the BG74 it borrows from, Cannes is the first real chance to judge the stillness claim in person rather than from a manufacturer's release, and the coming weeks of trade coverage from the show should be the first independent word on whether the 86 percent figure holds up on the water.