1989 Boston Whaler 31 Express

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Warwick, RI

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Class Power
Category Sports Fishing Boats, Saltwater Fishing
Year 1989
Make Boston Whaler
Length 31'
Propulsion Type Twin Inboard
Hull Material Fiberglass
Fuel Type Diesel
Location Warwick, RI


  • (2) Raymarine 9 Touchscreen
  • Raymarine evolution autopilot with color control screen
  • Raymarine Quantum radar
  • 3 Transducers Sidescan / downscan / 1kw traditional
  • Engine room camera
  • 2 Standard Horizon VHF with antennas
  • Bennett Trimdicators (Included not installed yet)
  • Fusion Radio
  • 15 Amp Smart battery charger / maintainer
  • (2) Ipad with raymarine sync. One mounted over head rear to easily view from cockpit
  • (4) Underwater lights
Mechanical and Electrical
  • Reconditioned props (currently removed and being tuned to class 1 specs)
  • Shafts removed and checked for true
  • Cutlass bearings new
  • Stuffing boxes new
  • Transmission couplings new
  • Engine alignment done at same time.
  • Shaft line cutters new
  • Transmission oil changed and sampled. Results good.
  • 5 Thru hulls replaced
  • Trim tab cylinders replaced
  • Moisture meter checked every 24 over entire hull in 2015 survey with no water found.
  • Non Skid starboard Swim Platform
  • Macerator - Fresh water - (4) Bilge - Ultimate systems bilge float switch with high water alarm - live well pump - autopilot pump - saltwater washdown - A/C Pump
  • Head replaced with electric flush 2018
  • Cruisair SMXIR 12k BTU Air conditioner new and all hoses new
  • New motor on windlass
  • New Battery Switches and wiring
  • New LED interior lighting, LED under gunnel lighting, LED NAV lights, LED spreader lights, LED underwater lighting, LED engine room lighting
  • Microwave 
  • Electric Cooktop
  • Water Heater, new 2010
Engines Related

Cummins 6BTA 250HP with fresh water aftercoolers

ZF 220A 1.5-1 transmissions

Port 1,052 Hours

Starboard 1,121 Hours

Seller's Comments:

Engines were stripped of all components down to the blocks. All internal engine components were in very good shape. Oil analysis has been done on last 4 oil changes with good results (Available on request).

Engines start instantly and run perfectly. I have done approx 3500nm and 300 hours since i have owned and the engines have never let me down once.

List of items Replaced with NEW (not reman) on both engines:

  • Turbos
  • Aftercoolers
  • Alternators
  • Starters
  • Water pumps (fresh and salt)
  • Injectors
  • Belt tensioners
  • Rear Engine mounts
  • Injection pumps (Rebuilt)
  • Heat exchangers
  • Trans oil cooler (removed and cleaned)
  • Fuel lift pumps
  • Thermostats
  • Sea strainers (rebuilt and repainted)
  • Every hose replaced
  • (2) Caterpillar 4D batteries
  • 1 Caterpillar group 31 house / emergency Battery
  • Fuel lines completely replaced from tank to engine
  • New algae-x units
  • 1000 hour service complete (including valve adjustment)
  • Engine block heaters new and run 24/7 during season
  • Props are currently off being tweaked a little to get the best possible performance
  • Current performance
  • Slow cruise 2300 RPM 17-17.5 knots burning 16 GPH
  • Normal cruise 2400 RPM 18.5 knots burning 18 GPH
  • WOT 2600 RPM approx. 21 knots

Seller's Comments:

Engines will currently hit 2800 rpm which is 200 over redline. Props are currently being tweaked at a professional prop shop. They will be tuned to class 1 and according to calculations, cruise should raise approx 1 Knot at any given rpm. This should also improve fuel economy.

The engines should still hit 2700 rpm to prevent overloading. It will be the 3rd pitch adjustment since i have owned the boat and this should be a perfect fit.

Mechanical Disclaimer

*Engine hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing brochure.


The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Contact Information


JOE LONGOBARDI @ 410-490-0584 OR EMAIL jl@unitedyacht.com


Nominal Length
Length Overall
Max Draft
Dry Weight
Deadrise At Transom
Electrical Circuit
Double Berths
Engine Make Cummins
Engine Model 6BTA
Total Power 500hp
Engine Hours 1052
Engine Type Twin Inboard
Fuel Type Diesel
HIN BWC2A051C989
1989 Boston Whaler 31 Express

This Boston Whaler 31 Express shows extremely well for its age. She has been lavished on since the current owner bought her in 2015. Over $75k spent in upgrades to the boat in mechanical, electrical, electronics and major overhauling of her reliable and economical Cummins 5.9 250hp Diesels. Rigged to fish with tower and control station, this Unsinkable legend is ready to go for 2019!

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