by Delta Marine with Jonathan Quinn Barnett Design

Information on previous motor yachts built by Delta Marine has often been protected by strict confidentiality during construction, and the same applies to the new vessel known to date as Project 174046, which was still under construction at the yard’s Seattle facilities when the project was presented during FLIBS 2016. At the stunning Fort Lauderdale International Boat Show last year, the American shipyard’s stand featured a scale model of the new motor yacht that has been gradually taking shape at Delta Marine’s production facilities for some time now, turning the US owners’ dream into a reality.

The owners expressly chose this shipyard for personal, specific reasons, as their captain Mitchell Heath explains: “Building at home, in the US, was very important to the owners, and Delta was the premier choice based on its history, facility and family-style business model; Delta’s unique ability to build a metal hull and composite superstructure was also a big factor.”

After this initial decision, what type of vessel did the owners more precisely have in mind? Jay Miner, Delta’s Chief Naval Architect, responds: “The clients were looking for a high-performance semi-displacement motor yacht of less than 175 feet in length with a shallow draught for Bahamas and Caribbean cruising. They liked the style and build calibre of Silver Shalis and this project expands upon the technical achievements of that build.”

Silver Shalis is a full displacement motor yacht with a length of 180 feet delivered by Delta Marine in 2010. Participants in the project included Jonathan Quinn Barnett, a yacht designer based in Seattle, who was responsible for the interior design and collaborated with the late Bill Langan on the exterior design of the boat. For the new Project 174046, however, Jonathan Quinn Barnett has been responsible for both the exterior and interior design from the beginning, guided by the owners’ specific base requirements and supported by the specialist technical knowledge of their expert captain Mitchell Heath. On this point the Seattle-based designer commented: “The owners insisted on a comfortable, family-oriented yacht, and from the outset employed a very experienced captain who is capable of making the critically important, functionally efficient decisions these projects need throughout the planning process and along every stage of development. Plus he knows just when and how to let the builder’s own technical expertise and designer’s visions shine while maintaining a balance and charming way in the process. These are always challenging and extremely complex assemblies to be any part of; it’s important to the entire team that the owners enjoy the ride at every stage!”

The design for the new Project 174046 motor yacht was very much a team effort, involving all the professional resources available. The client and the captain worked closely with the Delta Design Group and the Jonathan Quinn Barnett Studio in designing the topside, sheer, chine and stem line of vessel’s semi-displacement aluminium hull. The result is a classically influenced exterior design with a hull shape allowing a shallow 7.7-foot draught, which has been optimised to provide increased tank capacity and more accommodation space, alongside improved power efficiency and seakeeping.

In terms of performance, Daniel Filonowich, Delta’s Chief Marine Engineer, enthusiastically comments: “I’ve always been a fan of things that go fast, so the fact that we are installing a combined 7,720 total propulsion horsepower in this project makes it exciting but challenging to fit all of the larger supporting equipment into the vessel, as well as controlling the acoustics of all of that power.” Furthermore, to reduce drag and assist in turning all of that horsepower into speed, a retractable stern thruster folds up to be stowed in the hull, to provide a smooth running surface. The innovativeness of each element of the new Delta Marine project is apparent in its sophisticated, high-tech components, for example the state-of-the-art all-glass touchscreen bridge console in the wheelhouse. However, the most interesting of Project 174046’s distinctive features is undoubtedly the balanced relationship created between aesthetics and volume to get the best from both of these critical emotional and functional factors. Interior deck heights were carefully managed in the design of the superstructure in order to maximise the yacht’s beam and impressive interior volume, while at the same time maintaining a low, sleek, aerodynamic profile.

As Jay Miner, Delta’s Chief Naval Architect, confirms: “Jonathan Barnett’s exterior styling gives a fresh and forward look to a proven hull design. Not only does the design maintain its sleek shape in profile and elevations, it provides superior glazing dimensions for unobstructed sightlines. This is something quite unique, when considering the interior volume and open deck viewing spaces with windbreaks.”

It’s a point of view that is entirely shared by the whole design team for the motor yacht, especially Jonathan Quinn Barnett who is keen to add: “I know one might say ‘We’ve heard all that before’, but working as a dedicated team and utilising shared 3-dimensional computer modelling, we have maintained the elegance of a long, low yacht that is more hull in appearance than house — like many early 20th century designs — while achieving greater usable guest spaces, greater than aboard larger vessels.”

Indeed, within the spacious interior, Jonathan Quinn Barnett is creating an atmosphere of casual elegance. What he terms “New American Classicism” is defined by multiple contrasting veneers and stones with paint finishes, and an avoidance of any built-in appearance to the furnishings. Twelve guests are accommodated in six staterooms, including a bridge-deck VIP suite and a full-beam master suite on the main deck. Impressive crew quarters accommodate up to 12 crew. Soaring ceilings feature prominently aboard Project 174046 and Delta’s engineering and design teams worked with the designer to incorporate maximum headroom with door casings throughout allowing a 6-foot 10-inch clearance. Jonathan Quinn Barnett explains that the clear height of the doors – yet another unique feature – required close coordination with Delta’s engineering and design teams to accommodate fire doors with self-closing mechanisms that are fully functional and discrete. Enormous exterior deck areas maximise shade and sun, with loose furnishings allowing for multiple gathering and entertainment areas. Each deck offers dining-accessible bars, plenty of lounging areas and tables for al fresco meals for 10 to 14 people. From the quayside, the fibreglass superstructure funnel and mast design hides the sun deck’s day head, elevator access, storage and emergency genset from view. Offering separate areas of shade and sun this deck is highlighted by a 13-foot walk-up teak bar serving a jetted pool with a shallow mosaic-tile sunning beach section and a waterfall feature.

Pocket doors separate a forward lounge seating and viewing space that features a discrete crew access service hatch with stairs leading directly to the motor yacht’s pilothouse.

Flaviano Perelli

DELTA PROJECT 174046 technical specifications

Hull Number 174-046
Yacht TypeMotor Yacht
Hull TypeSemi Displacement
Number of Decks3
LOA53.0 m / 173’10’’ ft
Beam 10.36 m / 33’11’’ ft
Max Draught 2.31 m / 7’6’’ ft
Fuel Capacity94000.00 litres / 24832.17 US gallons
Engines2 x MTU Diesel 16V4000 M73L
Total Power7720.00 hp
Guests: 12
Passenger Rooms: 6
Master Rooms: 1
VIP Rooms: 1
Double Rooms: 2
Twin Rooms: 2
Year of Build2018
Naval ArchitectDelta Design
Exterior Designer Jonathan Quinn Barnett
Interior DesignerJonathan Quinn Barnett
BuilderDelta Marine

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