2018 Harris Grand Mariner CW 270 Twin Engine

Finally, a pontoon boat with equal parts performance and comfort. The Grand Mariner CW 270 Twin Engine provides both in excess. With the CW floorplan, you’ll enjoy two plush bow lounges, an UltraLux high-back reclining helm seat and two rear chaise lounges with swim deck seating. A 12-foot Bimini top, soft-sided cooler, swim deck with four-step boarding ladder and six-speaker Polk stereo add to the creature comforts. Great lengths have been taken to ensure the safety and stable performance of the Grand Mariner CW 270 Twin Engine, such as three 27-inch diameter reinforced pontoon tubes using 0.125-gauge aluminum and a 93-gallon forward-mounted fuel tank to minimize bow rise.

Please note: This boat model may or may not be in-stock. A Nationally Advertised Price, if listed, may change without notice or include accessories not fully described herein. Please contact your local, authorized dealer for exact details on model availability and package pricing.

Basic Boat Info

Make: Harris
Model: Grand Mariner CW 270 Twin Engine
Year: 2018
Category: Power
Construction: Aluminum


Length: 26 ft
Length Overall: 27'2 ft
Beam: 8'6 ft
Max Draft: 1'9 ft
Min Draft: 1'1 ft
Bridge Clearance: 5'2 ft
Dry Weight: 4,397 lb

Engines / Speed

Engines: 2
Engine #1 Specs:
  • Type: Outboard
Engine #2 Specs:
  • Type: Outboard


Fuel Tanks: 1
Fuel Tank Capacity: 93|gallon


Maximum Number Of Passengers: 11
Boat Class: Pontoon Boats
More Info : Manufacturer Website
  • 12 Volt Outlet
  • 12' Bimini (1.25" frame w/ SST quick release)
  • Aluminum UnderSkin Kit (incl. w/ Perf pkgs, PIII or Twin Engine Platform)
  • Courtesy Lighting
  • Digital Deptsounder
  • Double Battery Selector Switch (incl 2nd battery tray)
  • Full Length Keel
  • Gate Floor Stops (Dealer Install)
  • Helm Storage Door
  • Lockable Glovebox
  • Manual Fire Extinguisher
  • Mooring Cover (E-Z Clip w/ storage bag & vents)
  • Quick Release Fender System (2-5.5" fenders, 2 straps, 4 quick release)
  • Removable Windscreen
  • Removable Woodgrain Table w/ Molded Drink Holders (Dealer Install)
  • Soft-Sided Cooler w/ Logo
  • Stainless Steel 4-Step Flip-Down & Telescoping Ladder
  • Stainless Steel Cupholders
  • Stainless Steel LED Docking Light Pods
  • Tachometer
  • Tilt Steering
  • UltraLux Helm Seat (Highback Recliner)
  • 16-inch on center placed cross members
  • Decking with tongue & groove water-prevention system
  • Decking, 3/4" 7-ply pressure treated plywood
  • Full-length pontoon brackets, Total Torsion Reduction System
  • Stainless Steel Flip-up Cleats
  • Underdeck Wiring Protection System
  • Polk stereo - incl 6 Jensen speakers, plus rear lounge & transom remotes


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