Sirena 48, superlative hull

The weather and sea conditions were particularly tough when we tested this motor yacht. But the waterlines designed by German Frers mean that she holds the water very well

by Francesco Michienzi – photos by Jeff Brown

Shortly after the Cannes breakwater, I began to wonder if it was such a good idea to set off in twenty knots of wind and waves of between one and two metres, dressed in jacket and tie, without even a waterproof jacket for protection. I hadn’t intended to test the Sirena 48, but the circumstances gave me the chance to take the helm in conditions that were far from favourable. It’s not often that you get to test a boat in such windy and rough conditions. I must say that the boat immediately proved to be excellent, the hull taking the waves in a very natural way, it was very harmonious and seemed to be at one with the water. The feeling of sailing safely was increased by the solidity of the build and the lack of vibration. It was gentle on the waves and – despite the overall height of the boat – when turning it didn’t oscillate around the vertical axis. I have to confess that I enjoy sailing in conditions like that.

With large windows that let light in from all sides, the day area has a large open space. The first part of the saloon is reserved for the galley, equipped with everything you need for a long cruise, while the living area is furnished with sofas, tables and various pieces of furniture.

To get through a wave safely, you have to hang on tight to the wheel and quickly assess every single change in the wind and current. It gives you a sense of power and control that gives a nice adrenaline rush. I could have gone on for hours, but I reluctantly handed over to a British colleague who didn’t seem to care at all about the guests on board. He opened up the throttle like a kamikaze pilot and threw us into the air. This devil-may-care approach meant that we were hit by a huge wave, unfortunately for my unusual outfit. The boat weighs about 25 tonnes and has a medium displacement. His idea of testing a boat was to push it to its limits, even at the cost of structural damage. Anglo-Saxon sailors are known to be a hardy lot, unlike us Mediterranean pansies. But the Sirena 48 was completely untroubled by all of this.

It is made from glass fibre infusion moulding, with a very advanced process that makes it stronger, lighter, more resistant and more consistent in weight distribution. Computational fluid dynamics were used to design it to reduce water resistance and to optimise trim, both in displacement and planning modes. It is a boat that has been created to reflect a solid marine culture. What has emerged from that is an impressive demonstration of the ancient concept of sailing combined with important technological content that the guys at the yard led by Ipek Kiraç, Cagin Genç, Federico Martini and Ali Onger are capable of putting together.

There are numerous layout options to suit every owner’s needs, with the choice of an open cockpit or a more traditional aft deck layout. The accommodation comprises three cabins and two heads. The master suite is full beam with a double bed and sofa, and an additional crew cabin is available as an option.

The Sirena 48 is powered by two 550-hp Cummins QSB 6.7s. The semi-planing hull, designed by German Frers, is efficient both in displacement mode and at the 22.4-knot maximum, while the cruising speed comes in at around 15 knots. The range is around 420 nautical miles at the 10-knot economy cruising speed. There is also the option of using Volvo Penta D11s, each developing 670 horsepower, which allows you to get up to 27 knots.

The flybridge is the outdoor social area and features a second helm station, a C-shaped full-beam sofa with centre table and a large sunpad.

With a 16-metre overall length and a five-metre beam, it has a weight-to-power ratio of around 19 or 22 kilos for every horsepower available, according to which engine option is deployed. In terms of how the spaces have been arranged, the 48 delivers volumes and areas that are ideal, both for hosting a large cocktail party or a day out and for accommodating up to six people on longer trips.  It offers a versatility that has been studied and has proved itself to be the perfect design to meet even the most varied requirements. The windows in the side help to lighten the volumes, which are pleasant and perfectly integrated with the stern platform. You get from there – the area for getting into the water and swimming – to the cockpit, the first real space for socialising that you find. It is wide, protected both by the sides and the overhang of the flybridge, and has various configurations, all of which include a table and sofa – although these are arranged differently if the sun pad is added.

The structural design complies with EN-ISO 12215. The hull, deck and superstructures are constructed using sandwich technology. The entire boat is built using the vinyl-ester resin infusion technique and assembled with structural adhesives designed for marine applications. Thanks to the vinyl-ester resins, maximum resistance to osmosis and better surface finish, Sirena Yachts is able to offer a 5-year warranty against osmosis. This construction technology reduces weight and improves construction quality and consistency. The deck and superstructure are made from carbon hybrid fabrics for improved lightness and strength. Bulkheads are PVC sandwich and secondary bonded to the hull with lamination.

Engine room
The Sirena 48 has two different power options, both fed from the same 1,900-litre fuel tank. The standard option is twin Cummins QSB 6.7 engines developing 550 hp each, with a V-drive transmission. Or you can opt for twin 670hp Volvo Penta D11s, giving a top speed of around 26 knots.

SIRENA YACHTS
Marinturk Istanbul City
Port Bati Mahallesi
34890 Pendik – Istanbul, Turchia
www.sirenayachts.com

Dealer Italy
GPY Marine – www.gpymarine.it

Dealer Usa
www.sirenayachtsusa.com

PROJECT
Frers Naval Architecture and Engineering (exterior design & concept) • Sirena Marine (interior design)

HULL
LOA 16,04m • Maximum beam 5m • Draft (full load at propellers) 1.05m • Full load displacement 28 t • Fuel tank volume 1,900 l • Fresh water tank volume 600 l • Waste water tank volume 300 l • Grey water tank volume 240 l • 3 cabins + 1 crew • 6 berths + 1 crew • 2 bathrooms + 1 crew • Built in VTR

EC CERTIFICATION Cat B

MAIN PROPULSION
2 Cummins 550 hp • As optional: 2 Volvo Penta D11 of 670 hp • V drive in-line transmission

PRICE
Starting from 975,000€ Excl. VAT (January 2024)

(Sirena 48, carena superlativa – Barchemagazine.com – Gennaio 2024)