1974 Doggersbank 19.2 — CONSTANT
Seattle, Washington
$695,000
Steel Offshore Expedition Yacht
3,500 NM Range | Proven Ocean Cruiser | Dutch-Built
Video Tour
Before diving into the details, watch this walkthrough to understand why the Doggersbank platform is one of the most respected long-range cruising yachts ever built.
This video illustrates the engineering philosophy, construction quality, and offshore capability that define the Doggersbank line.
A True Dutch Offshore Yacht
Designed by Dick Boon of Vripack and built in Holland by Jongert, CONSTANT is properly described by the builders as a Doggersbank 19.2 (19.20 meters).
Doggersbanks are renowned for combining:
• Commercial-grade construction
• Exceptional seakeeping
• Long-range cruising capability
• Mechanical simplicity and reliability
Constructed with Corten steel plating and conservative North Sea scantlings, CONSTANT reflects a design philosophy centered on safety, efficiency, and offshore durability.
Key design features include:
• Deep forefoot
• Full-length keel
• Round bilges
• Hydraulic stabilizers
• Canoe stern
• Becker articulated rudder
The result is a true displacement expedition yacht capable of crossing oceans comfortably and safely.
Hull & Offshore Design
Recent haul-out and yard work include:
• Anti-fouling bottom paint
• Boot-top paint
• Propspeed coating applied to running gear
These images illustrate the fundamental Doggersbank design elements:
• Full-length keel
• Becker articulated rudder
• Naiad hydraulic stabilizers
• Heavy displacement offshore hull form
This configuration provides exceptional tracking, stability, and efficiency during long offshore passages.
Deck Equipment & Ground Tackle
Windlass: Lofrans Titan B (24V)
Anchors
• (2) 220 lb stainless steel anchors
• Fortress FX-55 aluminum anchor
Chain
• 1/2” high-test galvanized chain
• 145’ port rode
• 365’ starboard rode
The vessel carries serious anchoring equipment appropriate for remote cruising and extended time at anchor.
Machinery & Systems
Main Engine
Caterpillar 3408 diesel
365 HP @ 1,800 RPM
Installed: 1981
Engine Hours: ~6,700 hours (March 2026)
Transmission: Caterpillar 7211 (4.48:1)
Propellers
• 5-blade bronze propeller (39” pitch)
• Spare 3-blade bronze propeller included
Major Engine Service (October 2024)
Performed by Radtke Marine Inc., Seattle
• Turbocharger replacement
• Seawater pump replacement
• Cooling circulation pump replacement
• Rear exhaust manifold replacement
• New stainless wet exhaust silencer
Documented investment: $45,000+
Generator
Northern Lights 16 kW diesel generator
~4,300 hours
120/240V AC output
Electrical & Energy
24V DC system
Magnum MS4024 inverter/charger (4,000W)
50A / 240V shore power with isolation transformer
Redundant 50/60 Hz AC transformers
Professional Mariner corrosion monitoring system
Tankage & Offshore Range
Fuel capacity: 2,700 gallons
Fresh water: 1,200 gallons
Watermaker: Village Marine LW-200 (~8.3 GPH)
Cruising Profile
Cruise speed: ~8.5 knots
Hull speed: ~9.6 knots
Estimated range: ~3,500 nautical miles
This tankage and efficiency allow CONSTANT to cruise far beyond normal marina-to-marina operation.
Navigation & Electronics
Simrad NSS EVO2 navigation system
Simrad AP48 autopilot
Furuno SC-702 satellite compass
Garmin GPSMAP 4208 backup plotter
Additional systems include:
• Radar
• AIS
• Multiple VHF radios
• EPIRB
• Satellite phone
• Engine room CCTV
• Redundant compasses
• Manual steering override
Connectivity
Starlink satellite internet system installed, providing reliable connectivity while cruising remote areas.
Tender & Exploration Skiff
Included with the vessel:
14’ Rendova skiff
Powered by:
50 HP Honda outboard
Ideal for:
• Shore exploration
• Diving
• Fishing
• Remote anchorage access
Interior & Accommodations
CONSTANT’s interior reflects the priorities of serious cruising yachts: durability, warmth, and practical layout for extended living aboard.
European craftsmanship is evident throughout with:
• Solid joinery
• Well-fitted cabinetry
• Excellent ventilation
• Comfortable sea-kindly layout
Pilothouse
A true operational pilothouse designed for passagemaking.
• Centerline helm station
• Excellent forward visibility
• Port & starboard watertight doors
• Raised bench seating with table
• Direct access to side decks
Main Salon
Comfortable and inviting while remaining secure underway.
• Built-in upholstered settees
• Custom cabinetry
• Large windows for natural light
• Soapstone wood-burning cabin heater
• Direct access to aft deck
• Forced-air heating system
Galley & Dining
Located low in the vessel for comfort while underway.
Galley Features
• Dickinson 4-burner LPG stove with oven
• Double stainless sinks
• Refrigerator (~10 cu ft)
• Freezer (~12 cu ft)
• Two Copeland refrigeration compressors
• Extensive storage
Dining Area
• Extendable dining table
• Built-in cabinetry and provisions storage
Stateroom Layout
Three stateroom layout with two heads.
Owner’s Stateroom (Port Aft)
• Queen berth
• Private ensuite head
• Tub with enclosed shower
• Extensive cabinetry
Starboard Aft Cabin
• Single berth
• Ideal guest cabin or ship’s office
Forward Guest Cabins
• Upper and lower berths
• Built-in lockers
Cruising History
CONSTANT’s reputation is based on real voyages, not marketing.
After early ownership in Europe, the vessel crossed the Atlantic and entered the Pacific, establishing herself as a serious offshore cruising yacht.
She has cruised extensively throughout:
• Southeast Alaska
• The Inside Passage
• Vancouver Island
• Remote British Columbia coastlines
• Alaska fjords and anchorages
In 2021 the vessel entered new stewardship under her fourth owners, who have continued careful maintenance and cruising.
Most recently the owners completed an extended voyage to Mexico and the Sea of Cortez (2024–2025) covering approximately 5,000 offshore miles round trip.
This voyage further demonstrates CONSTANT’s continued capability as a long-range expedition yacht.
A Rare Opportunity
Doggersbanks are widely respected among serious cruisers as some of the most capable displacement yachts ever built.
CONSTANT represents a rare opportunity to acquire:
• A proven Dutch offshore design
• A vessel with documented ocean cruising history
• A yacht that continues to be actively maintained and upgraded
For owners seeking a platform capable of exploring Alaska, Mexico, or beyond, CONSTANT offers an exceptional combination of pedigree, range, and capability.
