1974 Doggersbank 63

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.