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Shamrock 270 Mackinaw

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Boat REF# 137741
Sold / Unavailable
Length 27'0"
Year 2006
Construction GRP
Underwater profile Planing
Sleeping berths 1
Engine 1 x diesel 315hp, Yanmar 6LPA-STP (2006)
Lying Hansville, WA USA


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Extra Details

Designer Shamrock
Builder Shamrock
Lying Hansville, WA USA
Fuel capacity 160.0 USG Total - 2 Tanks
Water capacity 20.0 USG Total - 1 Tanks
Holding tank capacity 10.0 USG Total - 1 Tanks
Deadrise 11-15


Engine 1 x diesel 315hp
Engine make and model Yanmar 6LPA-STP (2006)
Engine Hours engine1:   111
Engine Cooled Indirect
Steering wheel
Drive shaft
Prop(s) nibral 4 blade
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Fuel consumption (approx) 13.0 USG /hour At Cruising Speed
Cruising speed (approx) 26 knots
Max speed (approx) 32 knots

• ZF Hurth ZFE63A transmission via straight shaft drive to 4 bladed propeller.
• "Smart Panel" Electronic warning for low coolant, low oil pressure, high coolant, high turbo boost, water in fuel, and gear oil.
Stainless steel wheel
• Ultraflex series hydraulic helm.
• Stainless steel trolling valve.
• Twin adjustable trim tabs.
• Two Group 31 for starting, Interstate U220S series.


Length 27'0"
LWL 25'0"
Beam 9'3"
Draft Min 2'5"
Draft Max 2'5"
Airdraft 8'2"
Displacement 7,525.0lbs
Headroom 6'0"

Electrical Systems

12 volt, 2 batteries charged by: engine, shore power


Save 10% on graphic design and boat graphics
Construction GRP
Underwater profile Planing
Finish Gelcoat finish

• Total LOA pulpit to platform 30' 6"
• Eight person, 600KG (1,320 lbs.) load.
• Dual tilt-seat engine compartment access with Marine vinyl padded benches.
• Keelguard.
• Bottom painted w/Tuff Stuff epoxy and two coats of Cukote bottom paint during February 2011.
• Marine vinyl padded gunwales and transom.
• Two stainless steel grab handles.
• Cockpit courtesy lights.
• Two through-the-transom cockpit deck drains and two below cockpit deck drains.
• Transom door between cockpit and swim step.
• Swivel marine vinyl Captain's chair w/adjustable arm rests and fore/aft position.
• Tilt access for helm controls and electrical wiring.


Total # of berths 1
No. of double berths 1
Cabin(s) 1
Sink 1
Shower 1
Heads 1 heads (Electric)
Stove tick
Sink tick
Fridge tick
Freezer tick
Carpet tick
Drapes tick
Cabin heating tick
Pressurised water system tick
Hot water system tick
Fresh water wash tick
Raw water wash tick
Cockpit shower tick
Non-Smokers tick

• Two large forward windows
• Three sliding windows w/screens.
• One large aft window w/screen.
• Two forward window flares.
• Cabin door w/open catch and window.
• Recessed salon lighting.
• Cabin walls and ceiling trimmed with marine vinyl.
• Custom finished wood dinette table. Table rotates and may be stored beneath the lounge seating bench.
• Padded dinette lounge seating bench
• Cabin deck carpeted w/removable carpets.
• AM/FM/CD w/two Pioneer speakers.
• Front sunshades or privacy curtains.
• Three-speed cabin and V-berth heater.with front window defrost
• Two rubber mats to cover floor when carpeting is removed for fishing.
• Two flat screen HD TV's


• Stainless steel sink w/ hot and cold water.
• Pressure water system.
• Finished cherry wood galley cabinets.
• Dual voltage Norcold DE0051 refrigerator w/freezer.
• Breakered twin AC outlet.
• 120v AC breaker panel.
• 12v DC breaker panel.


• Brand new upholstered V-berth cushions.
• Marine vinyl appointed berth.
• Four reading lights.
• Bomar tilt hatch w/screen.
• Privacy curtain.
• Gear catch rails.
• CO2 Alarm.
• Ample storage in three compartments beneath V-berth.


• Electric Marine toilet w/Y-valve macerator.
• Sink w/hot and cold water.
• Shower w/ hot and cold water.
• Full-length mirror.
• Tilt-open porthole w/screen.
• Hot Water Tank 6 gallons

1 burner propane Stove

Nav Equipment

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Speed tick
Log tick
Radar tick
VHF tick
GPS tick
Chart plotter tick
Stereo tick
Clock tick
Navigation lights tick
TV tick
Fish Finder tick
Depth sounder tick

• RayMarine C80 - Chartplotter/fishfinder Radar/chart overlay.
• Raymarine VHF radio w/microphone.
• Eight-foot Shakespeare 529-VW digital antenna.

Deck Gear

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Rode tick
Fenders tick
Boathook tick
Trailer tick
Swim Platform tick
Swim Ladder tick
Instrument Covers tick
Bow Thruster tick

Electric Lewmar ProFish 700 windlass (with remote control)
1 anchors
50'0" of chain
200'0" of rode
• Bow pulpit and roller with Lewmar ProFish 700 freefall windlass w/50 feet of 7/32" chain, 200 feet of 9/16" pro-set three-strand nylon line, and galvanized Lewmar 16.5 pound claw anchor. Windlass controls at windlass and at helm.
• Swim platform with folding boarding ladder and transom door.

• Navimo bow thruster w/joystick control.

• Port and starboard stainless steel cleats fore, aft, and amidships (pull-up).
• Stainless steel port/starboard stern hawse pipes w/two stainless steel cleats each (line and fender).


Tackle centre tick
Bait Boxes 1 Bait Boxes
Rod Holders 4 Rod Holders
Live Well 16.1 USG Live Well

• Freshwater wash down. Saltwater wash down.
• Rod holders for five rods beneath each gunwale (ten rods total).
• Stainless steel rocket launcher rod holder mounted to cabin roof.
• Insulated live bait well (16 gallons) with light and pump.
• Below deck fish box with macerator.
• Scotty base plates and electrical wiring.
• Convenience center bait station w/two storage compartments and cutting board.

Safety Equipment

Life jackets tick
Horn tick
Swim ladder tick

2 bilge pumps (0 manual / 2 electric)

Broker's Comments

Known as the Cadillac of fish boats.... The Shamrock 270 Mackinaw gives the smoothest ride you will ever have in a 27 foot sport fisher with such comfortable cruising accommodations. Capable of two week cruising for two people. The ride is smooth because of the engine's position amidship, preventing hobby horsing. Very capable offshore boat. Tuna fishing at it's best.
Capable of running at 25 knots in three foot seas with no pounding. Huge cockpit for four fisherman and all the beer they can drink. Infinitely controllable speed with the trolling valve for exact fish catching speeds.

Two brand new HD Flat screen TV's for dockside relaxing. One TV at the helm (up stairs) and one TV in the Vberth (downstairs).

With 111 original hours it shows as well as a new boat. With a brand new double axle trailer, this boat can be taken as far as the imagination will allow or wherever the fish are biting. And you can get there at freeway speeds!

For cruising the offset door allows for a very spacious interior. Two people can move around easily with out taking tuns with who sits or stands. There is a very comfortable L-shaped dinette, and when the table is removed it has the space of a 33 footer.
It is the "Best Combination in The World" -- almost.

These boat details are subject to contract.
Note: Offers on the asking price may be considered.

This Shamrock 270 Mackinaw has been personally photographed and viewed by David Ritchey of Boatshed Seattle. Click here for contact details.
The particulars herein are intended to give a fair description of the vessel but are not guaranteed as accurate. They shall not form part of any offer or contract for the sale of the vessel. The prospective purchaser is recommended to independently check the particulars. The vendor is not selling in the course of a business unless otherwise stated. Personal property is excluded from the sale of the vessel unless specifically included in the listing specifications above or in a Purchase Contract. Personal property may be equipment or gear not permanently attached to the vessel including but not limited to: artwork, entertainment equipment, fishing equipment, TV receivers, recreational equipment, kayaks, tools, and personal appliances. Photos that may incidentally depict owners' personal property do not convey that such items are included in the sale of the vessel unless specifically listed herein.

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