Maiora's New 50-Metre Superyacht Stops Exactly at 499 GT

What is the Maiora Supernova 50, and who built it?

It is a 49.8-metre, 499 GT steel-and-aluminium displacement yacht from Next Yacht Group's Maiora brand, unveiled at the Cannes Yachting Festival as the second and much larger project born from the yard's design partnership with the fashion house ELIE SAAB.

Maiora, built by Next Yacht Group at its Pisa and Viareggio facilities, showed the Supernova 50 at Cannes as its first yacht in steel and aluminium construction rather than the composite hulls the brand has used before. Tommaso Spadolini drew the exterior lines and general arrangement; the interior direction is credited jointly to ELIE SAAB and Carlo Colombo. The layout holds six cabins for up to 12 guests and crew quarters for nine in five cabins, spread across five decks of outdoor space and an aft beach area that adds a dip pool, fold-down wings and space for a large tender, according to Miami Living Magazine's specification report.

The Supernova 50 is not ELIE SAAB's first yacht. Next Yacht Group's Maiora line launched a 42-metre model, the Exuma, with the fashion house in an earlier collaboration, and Boat International's own interview with Elie Saab Jr and Next Yacht Group's Giorgio Mattei at that launch has Mattei stating plainly that the 42-metre 'is only a first step, because we want to rise up to 50 metres.' The Supernova 50 is that step delivered, not a new idea: the same design partnership, scaled to the size Mattei named at the time.

Why does the Supernova 50 stop at 499 GT instead of building bigger?

One more gross tonne pushes a yacht into the SOLAS commercial-vessel rulebook that begins at 500 GT, and naval architects who work the rule regularly put the resulting jump in crew and running cost at roughly USD 150,000 to 160,000 a year.

Crossing 500 GT is not a cosmetic threshold. Per Boat International's reporting on the rule, it brings mandatory SOLAS safety equipment, ISPS security compliance, and an ISM code that requires a dedicated shoreside manager. It raises the certification level required of the captain and watch officers, adds an engineer position and two more deckhands, and forces a 15 percent increase in crew cabin size and area under the MLC 2006 seafarer-welfare code. Fire insulation has to extend from the engine room to the galley, sprinkler or high-fog systems become mandatory throughout the yacht, and classification-society surveying gets markedly more stringent. Port fees rise too. None of that is unique to Maiora - it is the standing cost of the extra tonne, and it is why a yard doing the arithmetic for an owner will often choose to stop just short of it.

Maiora's decision joins a small but established list of yards that have made the same call. Royal Huisman's Phi (58.5m) and Special One (52m, measured at 499 GT) and Sanlorenzo's 50Steel line all stay under the same ceiling, as does Mangusta's Oceano 50. Naval architects who specialise in the constraint - Perry van Oossanen, who drew Phi, and Gregory C. Marshall, a Canadian designer who told Boat International his studio spent 20,000 of its 64,000 annual design man-hours last year 'squeezing yachts to measure under 500GT' - describe it as one of the most labour-intensive exercises in yacht design, not a simple matter of leaving something out.

What does an owner give up to stay under 500 GT?

Designers who specialise in the rule describe real trade-offs on yachts built to hit it: reduced headroom, storage that behaves badly at sea, and crew and service areas noticeably tighter than an equivalent yacht built a few tonnes over the line.

Sergio Cutolo of Hydro Tec, quoted by Boat International, says the clearest cost is headroom: 'one of the issues we face trying to keep a yacht under 500GT for our clients is the limit it puts on headroom,' with a typical five-stateroom sub-500GT design capped near 2.15 metres. Vripack's Bart Bouwhuis, who designed Special One to the same limit, points to storage: yards can exclude certain enclosed volumes from the tonnage calculation if a set percentage stays open to the elements, 'perfectly legal, but on a crossing, your storage becomes a washing machine.' Thom Conboy of Ocean Independence and Heesen Yachts is blunter still: staying under 500GT, in his view, 'makes the interiors of a 50-metre feel like a 40-metre,' and he argues the rule itself - built on a decades-old cargo-ship tonnage formula never designed with owners' yachts in mind - should be scrapped outright.

None of that is a claim about the Supernova 50 specifically. Next Yacht Group has not published which compromises, if any, its own design made to land at 499 GT rather than 510 or 520, and neither Spadolini's studio nor Maiora has addressed headroom or storage directly in the material released so far. The trade-offs above are what the architects who work this constraint across multiple yards report happens generally when a hull is pushed to the limit - useful context for what an owner should ask the yard directly, not a verified fact about this particular boat.

What did Maiora build instead, and what does ELIE SAAB add to it?

Rather than spend the tonnage on more volume, the Supernova 50 gives over a full owner's deck, two balconied guest suites and a beach-club-style aft platform, and dresses the interior with a fashion house rather than a marine design studio.

The owner's suite occupies its own deck, with 180-degree sea views and direct access to a forward terrace; interior and exterior owner space together run to roughly 90 square metres, per Miami Living Magazine and Yahoo Style Canada's independent specification reports. Two of the six guest cabins sit on the main deck, each with a private terrace reported at around 7 square metres. The aft beach area is built as more than a swim platform, with a dip pool, fold-down wings and stowage for a large tender across the yacht's five decks of outdoor space.

The interior is credited to ELIE SAAB and Carlo Colombo jointly, furnished in part with pieces from the ELIE SAAB Maison collection rather than a marine supplier's catalogue. Elie Saab Jr, the house's CEO, called the boat 'deeply personal' in comments reported by Yahoo Style Canada, framing it around family life at sea rather than charter specification sheets - consistent with what he told Boat International at the smaller Exuma's launch, that the aim was 'a place of peace, of harmony, where people and their families can recharge and feel really at ease,' and that 'a lot of our key customers live on yachts, or have a yacht, or charter yachts' already.

When can an owner take delivery, and what will it cost to run?

Delivery is not due until the second half of 2028, no price has been published, and the one running cost that is already documented - the roughly USD 150,000 to 160,000 a year the 500 GT line saves an owner - is more concrete than anything about the build itself.

Propulsion is twin MAN D2862-LE489 diesels rated at 1,066 kW each, giving a reported top speed of 16 to 16.5 knots, an 11-knot cruise, and a declared range of 4,150 nautical miles at that cruising speed - enough to cross the Atlantic or run a full Mediterranean-to-Caribbean season without a refuelling stop. Fuel capacity is reported at 56,000 litres. The yacht is under construction at Maiora's Pisa facility now, with delivery scheduled for the second half of 2028, roughly two years out from this unveiling.

Sources are not fully aligned on her length - Miami Living Magazine's specification report gives 49.80 metres with a 9.05-metre beam and 2.40-metre draft, while Yahoo Style Canada rounds to 50.9 metres - and neither Next Yacht Group nor Maiora had published an official spec sheet or a price at the time of writing. For an owner comparing this against a yacht built a few tonnes over 500 GT, the annual crew and running-cost gap documented by Boat International's naval-architect sources is the harder number to plan against than a delivery date that is still two years away.