2018 Harris Grand Mariner SEL 250

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Grand Mariner SEL 250



Experienced pontoon boat owners appreciate the Grand Mariner Series for many reasons: sleek styling, thoughtful appointments, cutting-edge technology and proven performance — particularly the option for stern drive power. We guarantee the Grand Mariner SEL 250 won’t disappoint. The SEL 250’s open floor plan offers two spacious bow lounges, amidships lounge opposite the UltraLux high-back reclining helm seat and a luxurious rear-facing lounge with flip-top backrest. Plus, it has an open transom for easy access to the swim deck, with an optional stainless steel railing. If you prefer, you can replace the portside bow lounge with two UltraLux bow seats and a flip up table. Because Harris understands the needs of the Grand Mariner customer, the SEL 250 comes equipped with a ski tow pylon and performance package. Owners also may elect to add the available ski locker and changing room with privacy curtain. And then there’s that stern drive power offering 350hp, and with easy engine access. The SEL 250 is where technology, naval architecture and true on-water livability meet luxury, handling and style, without sacrifices and fuss.

  • Length overall (incl. ladder): 27 ft. 9 in. (8.46 m)
  • Pontoon length: 25 ft. (7.62 m)
  • Pontoon Diameter: 25 in. (63.50 cm)
  • Width (Beam): 8 ft. 6 in. (2.59 m)
  • Weight – 3-25" tubes-(All Options, No Fuel, No Engine, No Batteries): 5580 lb. (2,531.04 kg)
  • 3-25" Tube Capacity: persons/Max cap. (varies by engine): 13 persons / 2935 lb. (13 persons / 1,331.29 kg)
  • Max H.P. -3 tubes (PIII Package): 350 hp (260.99 kW)
  • Fuel capacity – PIII Package: 81 gal. (306.62 L)
  • Draft down with 25" tubes: 30 in. (76.20 cm)
  • Draft up with 25" tubes: 13 in. (33.02 cm)
  • Bridge clearance (Bimini & stern light down/Lowered Tower or Arch) with 25" tubes: 62 in. (157.48 cm)
Convenience Features
  • 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
  • Double Battery Selector Switch (incl 2nd battery tray)
  • Fish finder w/ Depth Sounder Lowrance Hook 3X
  • Full Length Keel
  • Gate Floor Stops (Dealer Install)
  • Heavy Duty Removable Stainless Steel Ski Tow Pylon
  • Helm Storage Door
  • Lifting Strakes
  • Lockable Glovebox
  • Manual Fire Extinguisher
  • Mooring Cover (E-Z Clip w/ storage bag & vents)
  • PIII Package (3rd tube, skin kit, lifting strakes, rough water pkg)
  • 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 Telescoping Ladder
  • Stainless Steel Cupholders
  • Stainless Steel LED Docking Light Pods
  • Starboard Gate (na. w/ Entertainment Bar)
  • Tachometer
  • Tilt Steering
  • UltraLux Helm Seat (Highback Recliner)
  • Main Desert Beige Seagrass
  • Rear Desert Beige Seagrass
  • Multi-Function Digital/Analog Gauges (GPS Speedo, fuel, depth, tach with engine data)
  • Polk stereo - incl 6 Jensen speakers, plus rear lounge & transom remotes
Decks & Floor
  • 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
  • Wiring, underdeck protection system
Accent Color Options
  • Black Sapphire Accent
  • Sparkling Champagne Accent
  • Midnight Blue Accent
  • Deep Red Metallic Accent
  • Sandy Pearl Accent
  • Platinum Silver Accent
Bimini Options
  • Standard Black 12' Bimini (Included Only with Black, Ebony, Sterling Gray, White Diamond, Mocha Pearl Panel Color)
  • Standard Blue 12' Bimini (Included Only with Midnight Blue Panel Color)
  • Standard Red 12' Bimini (Included Only with Fusion Red Panel Color)
  • Standard Tan 12' Bimini (Included Only with Champagne Panel Color)
  • Black Anodized Bimini (Requires/Included with Black Anodized Fence Option)
  • Black Delta Tower - (incl bimini & LED lights)
  • Silver Delta Tower - (incl bimini & LED lights)
Canvas Options
  • 12' Lighted Bimini
  • Bimini, 10' electric power top (incl Bimini/Ladder LED lights)(na w. black anodized opt.)
  • Bimini, 10' electric power top (incl Bimini/Ladder LED lights)(black anodized frame w/ black canvas)
  • Double Bimini - NA w/ Lighted/Power Top/Arch
  • Double Bimini (Req. Delta Tower or Sport Arch)
  • Full Enclosure (Includes Double Bimini)
Color Options
  • Black Sapphire
  • Champagne
  • Midnight Blue
  • Sterling Gray
  • Ebony Metallic
  • Fusion Red
  • Mocha Pearl
  • White Diamond
Optional Packages
  • Convenience Package: Woodgrain Portable Cupholder, Upgraded Steering Wheel & Kick Plates
  • Blue Lighting Package: Includes Lighted Cupholders, Courtesy Rope Lighting - Seat Bases, Underwater, Ladder & Underdeck Lights
  • White Exterior Lighting Package: Includes Blue Lighted Cupholders, Blue Courtesy Rope Lighting - Seat Bases, White Underwater, White Ladder & White Underdeck Lights
Comfort & Convenience Options
  • Additional Mid-ship Fender, Strap & Quick Release 5.5"
  • Additional Mid-ship Fender, Strap & Quick Release 8.8"
  • Pressurized Faucet & Freshwater Tank (requires entertainment center/galley)
  • Fenders, 2 additional 5.5" fenders w/ straps
  • Quick Release Fender System - 8.8" Dia (2 fenders, 2 straps, 4 quick release)
  • Fenders, 2 Additional 8.8" Dia w/ Straps
  • Battery on-shore charger, 120V
  • Changing room w. curtain
  • Fire Extinguisher - Automatic System
  • Stainless Steel Grill - (Fence Mounted, Dealer Install)
  • Lighted Cupholders
  • LED Rope Lighting (at seat base) - na courtesy lights
  • Underdeck Lighting (incl. LED Ladder lights)
  • Underwater Lighting LED (2) - (Incl. LED ladder lights)
  • Mid-ship Mooring Eyes
  • Porta Potti
  • Woodgrain Portable Cupholder
  • Safety Railing - req SL floorplan & Ski Tow Pylon
  • Smart Storage Drawer- Req. Ent. Center/Ent. Galley/Ent. Bar- NA Refrigerator
  • Upholstered Interior Panels
Engine Options
  • MerCruiser 6.2L 350HP BravoIII (w/ Catalytic Converter)
Fence Options
  • Black Anodized Fence Rail, Rubrail, Bimini Structure, and Ladder (na w. Bimini Electric Power Top)
  • Stainless Steel Rubrail Insert
Flooring Options
  • **Must Choose One MAIN and One REAR Flooring Option**
  • Main Woven Natural Wave
  • Main Beige Vinyl
  • Main Gray Vinyl
  • Main Desert Beige Seagrass
  • Main Gray Seagrass
  • Main Gray Woven Teak Supreme
  • Main Light Beige Woven Teak Supreme
  • Main Dark Woven Teak
  • Main Gray Woven Teak
  • Main Woven Shadow Diamonds
  • Main Teak Vinyl
  • Main Driftwood Teak Vinyl
  • Rear Woven Natural Wave
  • Rear Beige Vinyl
  • Rear Gray Vinyl
  • Rear Desert Beige Seagrass
  • Rear Gray Seagrass
  • Rear Teak Vinyl
  • Rear Gray Woven Teak Supreme
  • Rear Driftwood Teak Vinyl
  • Rear Light Beige Woven Teak Supreme
  • Rear Dark Woven Teak
  • Rear Gray Woven Teak
  • Rear Woven Shadow Diamonds
  • Rear Faux Teak
Furniture Options
  • Additional Woodgrain Table w/ Molded Drink Holders
  • Black Acrylic Table Upgrade w/ Stemware & Drink Holders
  • Additional Black Acrylic Table w/ Stemware & Drink Holders
  • Adjustable Height Seat Base with slider/swivel - na raised helm, saltwater pkg II or bolster seat
  • UltraLux Flip-up Bolster Helm Seat - na raised helm
  • Footrest for Each Seat N/A Drivers Seat
  • Jump Seat - na FS Floorplan
Helm Options
  • Sport Arch Aft Facing Camera - req. Sport Arch & Touch Screen Control
  • Keyless Ignition
  • Raised helm - na helm smart strg, adj height or 2 tube skin kit
  • Rearview Mirror - Dealer Install
  • Simrad GO5 GPS Chartplotter w/ Sonar
  • Glass Dash-12" & 7" Touch Screens
  • Steering Wheel Upgrade
  • Vessel View Link (Req Simrad)
Interior Color Options
  • Desert Camel (Standard)
  • Almond
  • French Gray
  • Pillow Top - Desert Camel
  • Pillow Top - Almond
  • Pillow Top - French Gray
Performance & Handling Options
  • In-floor Storage, incl auto bilge pump (Req PIII), na Perf Pkg PLUS
  • Polished Tubes - (Warranty Exclusion)
  • Salt Water Package for 25" tubes- (solid keels, end caps on lifting strakes (if ordered), additional transducer bracket, 4 anodes, and decal)
  • Mercury® Active Trim
Stereo & Sound Options
  • SST Speaker Covers - req Polk speakers
  • Lighted SST Speaker Covers - req. Diamond Upgrade
  • 2-Tower Speakers (JL Upgrade Only)
  • 2-Tower Speakers (Polk)
  • Sound System, Polk Diamond (incl amp, Polk stereo & spkrs, sub.)-na w/FS or FC floorplan
  • JL Audio® Platinum Sound System - 6 speakers with 2 Subwoofers and amps



Max HP
350 hp (260.99 kW)


Deck Length
27 ft. 9 in. (8.46 m)
Deck Width
8 ft. 6 in. (2.59 m)
5580 lb. (2,531.04 kg)
13 persons
Number of Tubes
Fuel Capacity
81 gal. (306.62 L)
Max Carry Capacity
2935 lb. (1,331.29 kg)


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