164' Bloemsma Spectral m 2023

Spectral 50m

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The 164-foot (50m) SPECTRAL 50 is a new-build, ocean cruiser designed by Christopher Seymour and design consultant Carl Esch to be built by Dutch Shipyard Bloemsma & Balk.

From an impressive 145-square meter main aft deck to a 40-square meter upper aft deck and an outstanding 75-square meter sundeck this superyacht offers expansive outdoor living for living the best of the alfresco lifestyle. SPECTRAL 50’s sprawling main deck aft, features a pool surrounded by sun loungers, a lounge area, and a bar — a retractable sun canopy provides shade when desired. When desired the pool can be covered to provide more deck space. Additionally, there is the option for the pool to convert into a Heli-pad.

This new-build yacht has an expectational beach club and garage transom, which allows the owners and their guests to relish endless days right by the water’s edge, enjoying the yachts plethora of tenders and toys.

SPECTRAL 50’s interior volume is just as impressive as her exterior with approximately 285-square meters of interior living space. Guido de Groot designed the luxury yacht's interior. Her main salon, formal dining, and sky lounge provide the perfect spaces for entertaining. Large windows surround the main salon providing an abundance of natural light. In addition to expansive windows, the main salon blurs the lines between inside and out with two-fold out balconies. A luxurious staircase allows for easy access to her three decks of SPECTRAL 50.

Superyacht SPECTRAL 50 offers accommodations for 10 guests in five sumptuous staterooms. Her owner’s suite, on the main deck, is a retreat complete with a private office, dressing room and en-suite bath. The superyachts additional staterooms are all located on the lower deck.

Just recently, an agreement was reached that the renown Van Oossanen Naval Architects will be responsible for the naval architecture onboard the Spectral series. Perry Van Oossanen has been practising naval architecture for over 40 years and is the owner of van Oossanen Naval Architecture. Perry is the person responsible for hydrodynamics and development. To have Perry van Oossanen and his team on board with us is no doubt a guarantee to deliver beautiful boats that are perfectly balanced and perform to their maximum capacity, with vibration, noise and wear to be minimized to the lowest numbers on the scale.

We are enormously pleased that Perry Van Oossanen has committed to working on the Spectral Series.

United Yacht Sales is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Northrop and Johnson. It is offered as a convenience by this broker/dealer to its clients and is not intended to convey direct representation of a particular vessel

More Details





OWNER & GUESTS (private/charter) up to 12 / 12 persons

CREW incl. Captain 9 persons

TENDERS 2x 11 METERS (36 FEET) and 4 PWC´s

MOB boat 2x 5.5 METERS (18 FEET)




GROSS TONNAGE (approx.) 490 GRT


SAILING AREA Unrestricted

Hull build in Marine Grade A Steel / Marine grade aluminum\nalloy made superstructure (including canopy and mast)

LLOYD\'S REGISTER Unrestricted Navigation MCA LY3 Compliance

The exterior lines\nare designed by Christopher Seymour in close cooperation with design consultant\nCarl Esch, and interior design by Guido de Groot.

Teak decks with\nfirst class grade quarter-sawn 55mm (x16mm) wide teak / stainless-steel\nexterior railing of circular tubes / glass windscreens / tinted double-glazed\nwindows / Awl- Grip or Alexseal finishing

· Stern boarding passerelle (hydraulic)

· Two (2) vertical\nanchor winches with warping head

· Two (2) capstans\nand four (4) bollards (stainless steel) on each side at main deck

· One (1) telescopic\nknuckle-boom crane at forward deck for launching the RIB boats and MOB

· Two (2) large integrated\ncranes at aft deck for launching the tender boats

· Retractable fore\nmast

· One (1) large top\ndeck partially covered by hard top, with seats and sun beds.

· One (1) large pool\non main deck aft with mosaic inlay and dedicated pool tank

· Two (2) hatches concealing anchors at Port & STB side

· Aft garage at\ntransom for PWC storage, convertible into beach club for guests

· Retractable sun\ncanopy at aft main deck

- Two (2) Balcony\nhatches at main deck saloon


- Heli-Deck\n(optional)

Garage convertible into Beach area for guests, with hatch aft garage convertible into enlarged\nbathing platform

Luxury staircase serving three decks

Central galley on the main deck, with a direct connection to the main saloon, lobby

and crew area

Owners suite, with dressing & bathroom, and private\noffice area at main deck

Large saloon at the main deck with dining and folding balconies\nat starboard & port side.

Large wheelhouse at\nsky lounge deck, with captain´s cabin, entertainment lounge, and aft terrace.

Four (4) luxurious guest cabins located at the lower deck

Large sun decks with external access stairways


Crew and service areas at the lower deck


Luxury areas (Owners, VIP, Guests and public areas) - approx.285sqm

Crew areas (Officers & Staff areas, crew areas and\nWheelhouse) - approx. 115sqm

Catering areas, Galley, Pantry, Catering & Laundry\napprox. 115sqm

Service & Technical areas and stores approx. 150sqm



Main Aft Deck - 145sqm

Aft Upper Deck - 40sqm

Top Deck - 75sqm



Guest cabins at 80% MCR on main deck Approx. 54 dB(A)

Owners area at 80% MCR on bridge deck Approx. 47 dB(A)


Guest and Owners area’s in harbor mode Approx. 46 dB(A)

Main deck 2.2 m

Bridge deck 2.1 m

Lower deck 2.10 m


Sun deck 2.2 m

Full entertainment system with Satellite TV/ audio and video\non demand/ internet in saloons, guest cabins and owners’ areas

Integrated Navigation System / gyro and magnetic compass /\nX-band radar / S-band radar / autopilot / speed log / echo sounder / DGPS /\nECDIS / conning / wind measurement equipment / AIS

A centralized, single duct (Variable Air Volume (VAV) in the\nOwner\'s and Guest areas) air conditioning system for interior Owner/Guest/Crew\nliving areas with the following design conditions:

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

Ext temp


External R.H.


Sea water temp


Internal temp


Internal R.H.












+ 35°C




+ 32°C
















-  5°C


- %










Communication according to GMDSS Area 3, Inmarsat F,\nIntercom, telephone installation

A high-pressure water mist fire extinguishing system is\nfitted to protect the accommodation, service and machinery spaces.

Twin generators 150\nkW, 400/230V 3 phase and Shore power transformer

A customized luxury exterior LED lighting scheme based on\nthe exterior design, including underwater\nlights.

The main propulsion plant consists of two (2) MTU 8V4000 M63\nDiesel engines 1000kW /bhp 1340 @ 1800rpm (or Caterpillar\nequivalent), each coupled to a Fixed Pitch Propeller (FPP) through reduction\ngear box and shaft line. Each main propulsion diesel engine is foreseen with\nsingle elastic mounting and elastic coupling to gearbox. Gearboxes will be hard\nelastic mount. Maximum speed is 16,0 knots.

Hydraulic driven in tunnel, allowing for Dynamic Positioning\n(DP0).

The exhaust gases of the propulsion engines will be led\nunderwater to the side shell, bypass for low operations will be lead to the\nside shell above waterline. The exhaust gases of the diesel generators will be\ndry type, fitted with sea water injection, and running through the hull sides\nabove the waterline.


Dry silencers and urea-based Selective Catalyst Reduction\n(SCR) systems will be fitted on all exhaust lines to fulfil the IMO TIER Ill\nRules Requirements on NOX emissions, Soot filters are foreseen on the Diesel\ngenerators exhaust lines

Contact Info

Contact Chuck Newman

Chuck Newman


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