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Cobalt 250 (2005-)
(w/ 1 x 375-hp Volvo Penta 8.1Gi sterndrive)

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Brief Summary

The 250 offers a fully functional layout with power, performance and a long list of amenities. She’s versatile and fits well into your lifestyle whether you just love to cruise or engage in watersports.

Key Features

  • 10 Year Hull/Deck Warranty
  • 5 Year Powertrain Warranty
  • Composite Transom
  • Fiberglass Stringer System
  • Ignition Safety Switch
  • Kevlar Reinforced Hull
  • AM/FM CD Player
  • Porta Potti
  • Extended Swim Platform with Wet Locker
  • Specifications

    Length Overall 25'0''
    Beam 8'6''
    Dry Weight 4,995 lbs
    Tested Weight N/A
    Draft 24'
    - Draft Up N/A
    - Draft Down N/A
    - Air Draft N/A
    Deadrise/Transom 22 deg.
    Max Headroom open
    Bridge Clearance 62''
    Weight Capacity N/A
    Person Capacity N/A
    Fuel Capacity 73 gal.
    Water Capacity 10 gal.
    Length on Trailer N/A
    Height on Trailer N/A
    Trailer Weight N/A
    Total Weight
    (Trailer, Boat, & Engine)

    Prices, features, designs, and equipment are subject to change. Please see your local dealer or visit the builder's website for the latest information available on this boat model.

    Engine Options

    Std. Power Not Available
    Tested Power 1 x 375-hp Volvo Penta 8.1Gi sterndrive
    Opt. Power 1x 300-hp MerCruiser 350 Mag MPI Bravo 1
    1 x 320-hp MerCruiser 6.2 MX MPI Bravo 3
    1 x 425-hp MerCruiser 496 Mag HO Bravo 1
    1 x 320-hp Volvo Penta 5.7 GXi DP
    1 x 375-hp Volvo Penta 8.1 OSi XDP

    Test Results - Change Measurement Unit

    RPM MPH Knots GPH MPG NMPG Stat. Mile NM dBa
    625 3.5 3.0 1.1 3.3 2.9 216 188 67
    1000 6.7 5.8 1.9 3.5 3.0 230 200 69
    1500 8.8 7.6 3.7 2.4 2.1 158 137 77
    2000 15.3 13.3 5.1 3.0 2.6 197 171 85
    2500 25.4 22.0 7.6 3.4 2.9 221 192 83
    3000 32.4 28.2 9.9 3.3 2.9 215 187 87
    3500 39.2 34.0 13.2 3.0 2.6 195 169 88
    4000 45.3 39.4 16.7 2.7 2.4 179 155 94
    4500 52.0 45.2 24.7 2.1 1.8 138 120 93
    4700 54.7 47.5 31.1 1.8 1.5 115 100 96
    625 188 348 5.60 4.16 1.40 67
    1000 200 370 10.80 7.19 1.49 69
    1500 137 254 14.20 14.01 1.02 77
    2000 171 317 24.60 19.31 1.28 85
    2500 192 356 40.90 28.77 1.43 83
    3000 187 346 52.10 37.48 1.39 87
    3500 169 314 63.10 49.97 1.26 88
    4000 155 288 72.90 63.22 1.16 94
    4500 120 222 83.70 93.50 0.90 93
    4700 100 185 88.00 117.73 0.75 96

    All fuel consumption numbers are the total for all engines in the boat. Speeds are measured with Stalker ProSports radar gun or GPS. Fuel consumption (gallons per hour) measured with Floscan digital fuel-flow meter or by on-board factory-installed diagnostic instruments. Range is based on 90% of published fuel capacity. Sound levels determined using Radio Shack digital decibel meter on A scale. 68 dBA is the level of normal conversation. Time to plane is measured from start of acceleration to formation of rooster tail behind boat.

    Performance Chart

    Performance Chart

    Acceleration Times & Test Conditions

    Time To Plane 3.3 sec.
    0 to 30 5.7 sec.
    Ratio 1.78:1
    Props Dual F5
    Load 2 pers, 1/2 fuel, no water, min. gear
    Climate 65 deg., 60% humid., wind: 10 knots; seas: 1-2 feet

    Cobalt 250 (2005-) Line Drawing


    Captain's Report

    Tested By Capt. Bob SmithCobalt builds their boats to last and backs them with an industry leading warranty. They are so confident of their craftsmanship and the quality of the products they put in their boats that they do not rely on the OEM to back parts. The 250 has docking lights for approaching the slip at night or lining up on the trailer in the dark. A bow scuff plate will help prevent ugly gouges in the nose from hitting the crank on the trailer. Cobalt uses gas assist shocks on just about everything that opens, including the anchor locker. Rubber bumper stand-offs keep the cover from radiating noise. LayoutBow seating wraps around from port to starboard with lounger backs on both sides as well as grab rails for safety underway. Cobalt uses a reinforcing yolk that traverses from the helm down across the keel and up the companion side to reduce flex in the hull. The storage in the helm is so large it makes the life jacket safety kit look small. The flip over windshield has a positive latch to keep it open when you intend to. Close it and the bi-fold lower door and you keep the cool air out of the cockpit. Huge in-floor storage handles the knee boards, skis and much more. The companion station has a changing room with Porta Potti hidden in it. The door to this station has a magnetic action rather than the typical slide catch that rarely works easily. Leave it to Cobalt to come up with a way to do it well! In the glove box is an XM ready stereo with CD, light and 12V connection to keep the cell phone charged. Next to the companion seat is a storage pocket, cup holder and built in armrest. Behind both bucket seats are islands that double as coolers when needed.At the WheelOver on the helm, you have another bucket seat with flip lip bottom for comfort out of the hole and when standing while driving. Our boat had a real wood wheel and wood accents on the dash that are just like those you find on luxury cars. All the power switches are protected by circuit breakers and main breakers. The stereo remote is on the right side of the wheel along with a digital air/water temperature and depth gauge. The rear seats wrap around the stern with a center walkthrough to the swim platform. The engine hatch does double duty as a sun pad with thick head bolster and pleated pad. A center pop-up ski tow is easy to set up and delivers a better tow position for your skiers in the group. A full beam width locker with dividers can also do double duty and be converted to an insulated cooler for everyone on the swim platform. The extended platform has a wraparound stainless steel rail to protect against dock strikes and a single lever releases the dive type swim ladder.SpecsCobalt’s 250 measures 25’ length overall with a 8’6” beam. Add the extended swim platform you have a boat that is 27’length overall. With an arch or ski tower, she has a bridge clearance of 111”. She weighs in at 5,000lbs. and carries 73 gallons of fuel. She has a 10 gallon freshwater capacity and is rated to carry up to 15 people on board. Draft with the drive up is 24” and with the drive down, draft is 39”. Our test boat was powered with a Volvo 8.1GI, but you have a huge list of stern drives from Volvo and MerCruiser to choose from.Performance and RideThe lake we tested on in Idaho and the weather conspired to give us a challenge, but the 250 was far more talented than the one to two foot waves it created. The 250 has little bow rise out of the hole and handled like a race boat in turns cutting tight and holding power well without cavitation. The speedster in you will be pleased. The 250 is out of the hole in 3.3 seconds and is passing through 30 mph in only 5.7 seconds. She cruises at 2500rpms and is traveling 25.4mph at cruise. At wide open throttle she was traveling 54.7mph at 4700rpms and delivering a thrilling ride. At cruise she is burning 7.6gph and at wide open she is burning 31.1gph with the Volvo 81Gi we had for sterndrive.If you are looking for a quality sportboat with power, performance and the amenities to make you and your family and friends comfortable on the way and on the hook, Cobalt’s 250 could be you answer.

    Test Result Highlights

    • Top speed for the Cobalt 250 (2005-) is 54.7 mph (88 kph), burning 31.1 gallons per hour (gph) or 117.71 liters per hour (lph).
    • Best cruise for the Cobalt 250 (2005-) is 25.4 mph (40.9 kph), and the boat gets 3.36 miles per gallon (mpg) or 1.43 kilometers per liter (kpl), giving the boat a cruising range of 221 miles (355.67 kilometers).
    • Tested power is 1 x 375-hp Volvo Penta 8.1Gi sterndrive.

    Standard and Optional Features


    CD Stereo Standard
    Head: Portable Standard
    Power Steering Standard
    Trim Tabs Optional

    Exterior Features

    Carpet: Cockpit Standard
    Outlet: 12-Volt Acc Standard
    Swim Ladder Standard
    Swim Platform Standard
    Tower: Watersports Optional
    Transom Shower Optional


    Bimini Top Optional
    Cockpit Cover Optional


    Hull Warranty
    Deck Warranty
    Transferable Extendable
    10-Years 10-Year transferable protection No
    Engine Warranty
    5-Year No
    Powertrain Warranty
    5-Year transferable protection
    Gelcoat Warranty
    2-Year transferable protection
    Accessories Warranty
    1-2 Year Yes
    ISO Certification NMMA Certification Yes
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