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DETAILS:
| stock number: | y283q0 |
| location: | Portland, OR |
| boat type: | powerboat |
| propulsion type: | power |
| length overall (LOA): | 30 |
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DESCRIPTION:
1975 Monark 30 Commercial Workboat – Military-Built Aluminum Hull with Cummins QSL9 450HP Diesel, Raymarine Electronics, SI-TEX Radar, Hydraulic Pot Hauler & Dual-Axle Trailer
Built for the U.S. Navy and transformed into a fully equipped commercial utility vessel, this 1975 Monark 30 combines military-grade durability with modern upgrades—including a Cummins QSL9 450 HP diesel engine (62 hours), Raymarine electronics, SI-TEX radar, and a hydraulic pot hauler. It’s a turnkey platform for crabbing, fishing, or harbor work, and includes a dual-axle galvanized trailer.
HIGHLIGHTS:
Cummins QSL9 8.9L Turbo Diesel – 450 HP, only 62 hours
ZF Marine Transmission
Hydraulic Pot Hauler with Integrated Controls
Raymarine MFD, Sonar, VHF
SI-TEX Radar System
All-Welded Deep-V Aluminum Hull – Ex-military durability
Heavy Push Knees, Non-Skid Deck, Flush Deck Hatch
Enclosed Pilothouse with Sliding Side Doors
Dual-Axle Galvanized Trailer Included
PROPULSION & MECHANICAL:
Cummins QSL9 450 HP – 6-cylinder turbo diesel, keel-cooled
ZF marine transmission
Professional installation, clean bilge
Wet exhaust system with insulated lines
Racor fuel filters, dual battery bank, master shut-offs
62 total engine hours
ELECTRONICS & NAVIGATION:
Raymarine Multifunction Display with GPS and sonar
SI-TEX Radar System
Raymarine VHF Radio
Labeled circuit breaker panel at helm
Radar arch with mounted antenna and running lights
FISHING & DECK EQUIPMENT:
Hydraulic Pot Hauler – mounted forward on port side
Integrated controls at helm
Ideal for commercial crabbing or trap fishing
Large open working deck with ample tie-down space
Push knees forward for gear handling or pushing skiffs
Aluminum non-skid deck, flush hatch access to bilge
Commercial rub rails and deck hardware
PILOTHOUSE & HELM:
Fully enclosed with dual sliding doors
Captain’s seat with 360° visibility
Clean dash layout and wiring access
Room for additional seating or storage
TRAILER:
Triple-Axle galvanized trailer included
Adjustable bunks and winch post
Road-ready and solid
VERSATILE & RUGGED:
Perfect for commercial crabbing, research, utility, or sport fishing conversions
Originally U.S. Navy-owned, later university-operated
Clean title and ready for immediate use
MILITARY ROOTS. COMMERCIAL POWER. FULLY EQUIPPED.
This Monark 30 is a rare find—offering new diesel power, modern electronics, a hydraulic hauler system, and a work-ready deck on a proven aluminum hull. Built to serve and upgraded to perform, it's ready to be put to work or customized further.
Built for the U.S. Navy and transformed into a fully equipped commercial utility vessel, this 1975 Monark 30 combines military-grade durability with modern upgrades—including a Cummins QSL9 450 HP diesel engine (62 hours), Raymarine electronics, SI-TEX radar, and a hydraulic pot hauler. It’s a turnkey platform for crabbing, fishing, or harbor work, and includes a dual-axle galvanized trailer.
HIGHLIGHTS:
Cummins QSL9 8.9L Turbo Diesel – 450 HP, only 62 hours
ZF Marine Transmission
Hydraulic Pot Hauler with Integrated Controls
Raymarine MFD, Sonar, VHF
SI-TEX Radar System
All-Welded Deep-V Aluminum Hull – Ex-military durability
Heavy Push Knees, Non-Skid Deck, Flush Deck Hatch
Enclosed Pilothouse with Sliding Side Doors
Dual-Axle Galvanized Trailer Included
PROPULSION & MECHANICAL:
Cummins QSL9 450 HP – 6-cylinder turbo diesel, keel-cooled
ZF marine transmission
Professional installation, clean bilge
Wet exhaust system with insulated lines
Racor fuel filters, dual battery bank, master shut-offs
62 total engine hours
ELECTRONICS & NAVIGATION:
Raymarine Multifunction Display with GPS and sonar
SI-TEX Radar System
Raymarine VHF Radio
Labeled circuit breaker panel at helm
Radar arch with mounted antenna and running lights
FISHING & DECK EQUIPMENT:
Hydraulic Pot Hauler – mounted forward on port side
Integrated controls at helm
Ideal for commercial crabbing or trap fishing
Large open working deck with ample tie-down space
Push knees forward for gear handling or pushing skiffs
Aluminum non-skid deck, flush hatch access to bilge
Commercial rub rails and deck hardware
PILOTHOUSE & HELM:
Fully enclosed with dual sliding doors
Captain’s seat with 360° visibility
Clean dash layout and wiring access
Room for additional seating or storage
TRAILER:
Triple-Axle galvanized trailer included
Adjustable bunks and winch post
Road-ready and solid
VERSATILE & RUGGED:
Perfect for commercial crabbing, research, utility, or sport fishing conversions
Originally U.S. Navy-owned, later university-operated
Clean title and ready for immediate use
MILITARY ROOTS. COMMERCIAL POWER. FULLY EQUIPPED.
This Monark 30 is a rare find—offering new diesel power, modern electronics, a hydraulic hauler system, and a work-ready deck on a proven aluminum hull. Built to serve and upgraded to perform, it's ready to be put to work or customized further.
Posted: May 22, 2025