46 Jefferson 1989 Boat for Sale

46' Jefferson 1989

1989 Jefferson 46 Sundeck

Powered by twin 3208 Caterpillar 325 Hp with only 2400 hours and a Westerbeke Generator with 2600 hours. 
This Tri-cabin, dual head, Galley down has everything you need for coastal cruising or liveaboard. 

Turnkey, extensively upgraded, and truly ready to cruise now, this 1989 Jefferson 46 Sundeck offers an exceptional opportunity for couples, liveaboards, and Chesapeake cruisers seeking comfort, space, and peace of mind.

M/Y Luthien is a highly desirable tri-cabin, dual-head sundeck motor yacht that lives more like a floating waterfront condo than a traditional cruiser. With a private aft master stateroom, separate guest cabin forward, two heads, a bright open salon, and a spacious sundeck for entertaining, she is ideally suited for Potomac and Chesapeake cruising, extended stays aboard, or full-time liveaboard living.

Between 2022 and 2025, Luthien benefited from nearly $80,000 in professionally documented upgrades and system renewals, addressing all major mechanical, electrical, plumbing, HVAC, and safety systems. Most notably, she is equipped with a new Sleipner SE130/250TC bow thruster system with dual helm controls, dedicated AGM battery, charger, and tunnel installation—dramatically simplifying docking and singlehanded operation.

Additional major investments include a comprehensive DC electrical backbone redesign and rewiring, replacement of shore power outlets and breakers, new terminal strips and cabling, new engine-room batteries and charging systems, generator rebuild and fuel system work, replacement of cracked exhaust hoses and clamps, fabrication and installation of new fuel supply hoses, raw-water system flushing and hose replacement, HVAC pump and electrical junction box replacement, bilge and seawater hose upgrades, and a full haul, block, and relaunch.

Luthien has been lovingly and expertly maintained by a retired U.S. Navy Captain with command experience, bringing a disciplined, no-compromise approach to safety, reliability, and system integrity. All work was performed by certified marine service providers and is fully documented. Complete maintenance records, invoices, and documentation are available for review.

If you are seeking a spacious, comfortable, and truly turnkey cruiser—without inheriting deferred maintenance or surprise projects—Luthien is ready to cruise today.

Between 2022 and 2025, M/Y Luthien underwent extensive, professionally documented repairs and system upgrades conducted by certified marine service providers including Potomac Marine, First Mate Marine, Kompletely Kustom Marine, Mad Jack’s Marine, Florida Bow Thrusters, and others. These repairs addressed all critical propulsion, electrical, plumbing, and safety systems. The following table summarizes the major work completed.

Category of Work Description of Work Vendor / Invoice Reference Cost (USD)

Major Upgrade Installation of Sleipner SE130/250TC 12V bow thruster with dual helm controls, dedicated AGM battery, charger, and tunnel installation. Florida Bow Thrusters – Invoice #65390 (Aug 2024) 

Engine & Generator

Repairs Westerbeke diesel generator rebuild including injector removal/reseal, fuel rail replacement, and glow plug reseal. First Mate Marine – Estimate #J.Newton-006 (Mar 2025) 

Engine & Exhaust

System Repairs Replaced all cracked exhaust hoses and clamps on both Caterpillar 3208 engines; cleaned and serviced stuffing boxes and rudder boxes. Potomac Marine – Repair Order #3811 (Apr 2025)

Fuel System Repairs Fabricated and installed four new fuel supply hoses for PIRTEK Marine – Invoice #PG-T00008324 

port and starboard engines. 2025)

Cooling System

Repairs Flushed raw-water systems on both engines and generator; replaced all associated cooling hoses. Kompletely Kustom Marine – Invoice #5578 (Dec 2023) 

Electrical System

Upgrade Replaced burned shore power outlets and breakers; installed new terminal strips and wiring. First Mate Marine – Invoice Newton-001 (Aug 2024) 

Electrical / Battery

Systems Replaced all engine-room batteries (two 8D, one 4D) and installed new 60A battery charger and cabling. Kompletely Kustom Marine – Invoice #5567 (Nov 2023) 

Electrical / DC

Distribution Installed new battery cabling, switches, and 12V DC distribution redesign; repaired HVAC and generator electrical systems. Kompletely Kustom Marine – Invoice #5572 (Dec 2023)

HVAC System

Repair Replaced A/C raw water pump and electrical junction box for aft cabin HVAC unit. First Mate Marine – Invoice (Oct 2024) 

Bilge & Plumbing

Systems Replaced cracked bilge and seawater hoses, hose clamps, and check valves for AC and bilge systems. Mad Jack’s Marine – Invoice #7245 (Mar 2025) 

Haulout & Bottom Work Full haul and block, pressure wash, land storage, and relaunch. Hampton’s Landing Marina – Invoice #242000 (Aug 2024) 

Denison Yachting - San Francisco is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Dominion Yachts.

Denison Yacht Sales offers the details of this yacht in good faith but can’t guarantee the accuracy of this information nor warrant the condition of this boat for sale. This yacht for sale is offered subject to prior sale, price change, or withdrawal from that yacht market without notice. She is offered as a convenience by this yacht broker to its clients and is not intended to convey direct representation of a specific yacht for sale.