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Koan is a Lyman-Morse Wesmac, a unique timeless classic beyond its “true to the glance” Downeast Flybridge design she provides 3 staterooms, a galley up, 3 helm stations and a 18kt cruise in a 50 foot custom Lyman-Morse built boat.

If you have ever wondered about the mystique of “Downeast” boats, why they “look” the way they do then you should investigate this well spoken of boat (call for press coverage). The traditional shapes on this elegant boat translate into a powerfully comfortable safe ride in very challenging sea conditions. (Downeast hull designs are known for their soft, dry ride. They ride at relatively flat angles at all speed ranges. Moreover, like many private airplanes, their single engine design cuts fuel and maintenance costs in half while also providing a keel that gives the best protection to the propeller and rudder possible.) KOAN offers Maine built Downeast luxurious craftsmanship, capable sportfish amenities and knowledgeable original ownership. This rare combination of modern Downeast hull design (Wesmac) generous fit and finish work from Lyman-Morse awaits your dream come true.

Layout and Design


The aft helm station with autopilot, engine monitoring panel and tethered remote helm provides all necessary control function for close quarters handling whether for docking or for fish fighting. Leisurely activities are enhanced by a Gaggenau AC grill and a refrigerator. The 96L x 36W x21D size below deck fish boxes have 110volt fill/discharge pumps, bait cooler and bait prep station to port is also 110 volt. The cockpit sink has hot and cold water as expected. Lee Outriggers, triple spreader model. Six rocket launcher rod holders are perfectly placed for fighting fish. The cockpit has a remote winch for anchor handling etc... Bomar hatches provide all below deck access and extra large transom door allows for big fish access to the cockpit. Under the transom fantail you will find very large storage compartments for fenders, rope etc.. The engine room is accessed from the cockpit, pull up walk-in hatch/door that has three steps down. Spreader lights provide the electrical lighting f


The custom finished interior mahogany with teak trim is “Finest Kind”. The deck sole is teak and holly. Entry to the salon is via a starboard custom Sea Glaze sliding door. Large C-shaped blue leather settee to port with enough room to sleep two people provides storage below the seating for rods and reels. The settee features a custom hi-lo expandable table to support dinning for seven. The entertainment center is directly opposite providing good viewing from the settee. Going forward to port is the galley. Forward to starboard is the helm station and large double seat complete with control and monitoring functions of all vessel operations.


Galley in the main salon to port features an island counter of Corian tops, ample storage in cabinets and drawers below. Sub Zero drawer freezers (2) 5.1 cu feet and refrigerator drawer ( 2) 4.0 cu feet , Kitchen Aid microwave with convection oven, Gaggenau (4) burner stove top complete the efficient layout out of the necessities. Clean-up via dual polished deep stainless sinks in combination with Grohe faucets rounds out this effective and attractive galley.

Crew stateroom


Crew quarters are to the port with an upper berth with reading lights over the Meile full size washer and drawer, hanging locker, drawer space.

Guest stateroom

Three steps down the companionway on the teak and holly floor is the guest stateroom to the starboard with 4 berths with wall mounted reading lights and designed so that berths can be removed and an a pre-designed office installed. Doors are 2” raised panel mahogany that shut like the day they were built. In center of the athwart ships berths is a large hanging locker and drawers

Guest Head

Forward to port is the ensuite head with its separate shower Head Hunter fresh water head and vanity complete with custom drawers and mirror

Master stateroom

Master berth forward is a center queen berth with 6" moderate density custom made mattress and custom reading lamps. This stateroom has large hanging lockers and multiple large drawers. The construction of this stateroom was done with a sound proofing package to provide the utmost privacy for lite-sleepers. The led dimmer adjustable lighting combined with opening ports and a large overhead hatch make for a private open feel. The berth has a power lift allowing access to the Side Power bow thruster mechanicals. A private door opens to the master ensuite head with vanity, large separate shower and a Head Hunter fresh water head.

Engine room

This very well lighted room allows 360degree focus on the Caterpillar V12 3412E 1200hrs, 1500 hp (CAT engine mounts) hooked up to a Twin Disc FG-6557SG 2.04:1 transmission with electronic troll valve. Engine exhaust is 14” and exits through the transom. The transmission turns a 3” Aquamet 22HS stainless steel shaft with a dripless stuffing box and a five-blade Teignbridge propeller.  Fuel filtering before the engine is accomplished by Racor 191100 MaV30 three filter system with control manifold. Reverso OP-703 electric oil changing pump handles the volume of oil change with ease. Incoming raw water goes thru a Groco water strainer with Groco ball valve sea cocks. The automatic engine room CO2 fire suppression is provided by a Fireboy MA2-900 fixed system. Multiple bilge alarms and pump indicators for the (4) Rule 3700’s are controlled from the helms. Steering is hydraulic with a multi ram steering power assist. This engine room has the mechanical systems for the Cruise Air 7,000btu, 12,000btu and 16,000btu air conditioning compressors. Forward under the master berth is access to the SidePower 10” 220HYD hydraulic bow thruster.


Holds 1250 gallons of fuel in 2 - 5052# aluminum tanks. Fresh water available is (1) 190 gallons custom polymer tank. There are 105 gallon black/65 gallon grey holding tanks with Jabsco macerator pumps. GEM units allow helm station monitoring of all liquid amounts in these storage tanks. Hot water system is charged by a Seaward hot water heater 20-gallon capacity with watermaker hook-ups if desired.


Furuno NavNet 2Kw radar / plotter with separate reading displays at bridge, helm and cockpit, Northstar 961GPS, Furuno 37 WAS GPS, Furuno RD 30 GPS, Simrad AP 20 autopilot provide the electronic navigation. Communications are conducted via Icom M127 with hailer, Icom 710 SSB with remote on bridge, Inter Tell satellite phone with remote on the flybridge, deckhouse, and master stateroom remotes. Caterpillar engine monitoring panels are found at each helm station to provide vital data performance of engine functions.

  • ACR RCL 100 search light provides the lighted way forward. Warning horn provided by a Jabsco electric compressed gas horn. Entertainment comes via Clarion Model XMD3 CD player with remote controls at flybridge and cockpit powering Bose speaker systems
  • Furuno Nav Net with separate reading display at bridge , helm and cockpit
  • Northstar 961GPS
  • Furuno 37 WAS Gps
  • Furuno RD 30 Gps
  • Simrad Ap 20 autopilot
  • ACR RCL 100 Search light
  • Caterpillar Panel
  • Icom M127 With hailer
  • Icom 710 SSB with remote on bridge
  • Inter Tell Satellite phone with flybride, deck house and master stateroom remotes
  • Clarion Model XMD3 Stereo with CD player with remote controls at Flybridge and cockpit



Wiring diagrams of the entire boat show her layout to ABYC code and make calculated modifications easy.

Ocean Options AC/DC current control panel is well laid out with wiring connections labeled / identified on the back side and the breakers labeled / identified on the front side of the 24volt / 12volt panel. Two 50amp shore power Glendenning Cable Master port and starboard 120v/240v service capable. Below decks are salon Guest switched 4 Optima Blue (2013) engine start batteries, 2 Optima Blue start batteries for the genset, 6 Lifeline gel house bank batteries. The charging duties are handled by the 12volt Newmar battery charger 50 amp and a 24volt Newmar 50amp battery charger. Matervolt 5,000 watt inverter does the electrical conversion work. When more power is desired the Westerbeke 32BEDA 60HZ 32kW 220V generator provides it. Ocean Pursuits provides the electrical bonding system.

Deck and Hull Equipment

The hull is solid fiberglass with Vinylester resin, stringers are vacume bagged and topsides are cored (cockpit with high density foam).The Muir 24 VDC windless controlled at the bridge and salon helm raise and lower either of the two (1) 30KG Bruce (1) Fortress FX55 anchors that are hooked up to (2) 400 ft. anchor rodes with 3/8 -30 ft. anchor chain also provided is a wash fresh water wash down for the anchors. Cleats on the bow are stainless 12"cleats


Stidd seats at a centerline helm with good sightlines to bow and transom are due to after end placement. Seating forward of the helm for seven is accomplished by a U-shaped settee with very large storage underneath. There is a separate air conditioning unit for the bridge that is located out of sight. The ease of wash down here is due to a fresh water system at the ready. Would you like more, well how about a convenient hot’n cold hand wash sink and beverage cooler? The custom tubular aluminum structure for the bridges hardtop was fabricated by the well-know Maine welder Noel Redman. Glendenning electric clutches, genset control and key navigational equipment is at the operator’s fingertips.

LOA: 50
Beam: 17'6
Draft: 6'3
Displacement: 60,000
Fuel Capacity: 1250
Water Capacity: 190
Type: Cruising
Builder: Lyman-Morse Boat Building Co.
Model: 50' Sportfish Cruiser
Year: 2003
Location: Long Island, Ny

For more information contact:

Annie Lannigan
(941) 374-3742

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