Cobalt Boats 273 2013 vs Cobalt Boats R8 Surf 2021 - Boat Spec Comparison

Q: Which is the larger boat — the Cobalt Boats 273 2013 or the Cobalt Boats R8 Surf 2021?

The Cobalt Boats R8 Surf 2021 is the longer of the two at 28,0 feet overall. The Cobalt Boats 273 2013 comes in at 27,5 feet, making it roughly 0,5 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: What is the maximum horsepower rating for these boats?

The Cobalt Boats 273 2013 has a documented max rating of 430 hp. Engine specifications for the Cobalt Boats R8 Surf 2021 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

Q: How many people can each boat hold?

The Cobalt Boats 273 2013 is Coast Guard rated for 8 passengers, while the Cobalt Boats R8 Surf 2021 is certified for 8. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.

Q: Which boat has the larger fuel tank — the Cobalt Boats 273 2013 or the Cobalt Boats R8 Surf 2021?

The Cobalt Boats 273 2013 has the bigger tank at 95 gallons, versus 8 gallons on the Cobalt Boats R8 Surf 2021. That 87-gallon difference translates to roughly 261–435 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Cobalt Boats 273 2013 and Cobalt Boats R8 Surf 2021 from the same manufacturer?

Yes — both the Cobalt Boats 273 2013 and the Cobalt Boats R8 Surf 2021 are built by Cobalt Boats. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.

Boat Comparison

Cobalt Boats 273 2013 vs Cobalt Boats R8 Surf 2021

Cobalt Boats

Cobalt Boats 273 2013

2013

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Cobalt Boats

Cobalt Boats R8 Surf 2021

2021

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Detailed Evaluation & Buyer Recommendation

Cobalt Boats 273 2013 vs Cobalt Boats R8 Surf 2021 — Same Brand, Different Boat

The Cobalt Boats 273 2013 vs Cobalt Boats R8 Surf 2021 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

The Cobalt Boats 273 2013 carries a rated maximum of 430 hp. Engine data for the Cobalt Boats R8 Surf 2021 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Cobalt Boats 273 2013 carries 95 gallons versus 8 gallons in the Cobalt Boats R8 Surf 2021. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 8 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: The Cobalt Boats 273 2013 and Cobalt Boats R8 Surf 2021 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.

General Boat Info

MakeCobalt Boats

Makenot available

Model273

Modelnot available

Model Year2013

Model Yearnot available

Measurements / Dimensions

Beam8 ft. 6 in. (2.59 m)

Beamnot available

Beam - Meters2.59

Beam - Metersnot available

Beam - Inches102

Beam - Inchesnot available

Bridge clearance - DetailWithout Bimini: 4 ft. 11 in. (1.5 m) With Arch or Tower: 7 ft. 7 in. (2.31 m)

Bridge clearance - Detailnot available

Bridge clearance - Meters2.31

Bridge clearance - Metersnot available

Bridge clearance - Inches91

Bridge clearance - Inchesnot available

Deadrise21°

Deadrisenot available

Draft [drive up] - Detail27 in. (0.69 m)

Draft [drive up] - Detailnot available

Draft [drive up] meters0.69

Draft [drive up] metersnot available

Draft [drive up] inches27

Draft [drive up] inchesnot available

Draft [max] - Detail39 in. (0.99 m)

Draft [max] - Detailnot available

Draft [max] - Meters0.99

Draft [max] - Metersnot available

Draft [max] - Inches39

Draft [max] - Inchesnot available

Weight - Detail5,800 lbs. (2,631 kg)

Weight - Detailnot available

Weight - kg2630.83

Weight - kgnot available

Weight - lbs.58

Weight - lbs.not available

Length - Feet27.5

Length - Feet28

Length [over all with swim platform]28 ft. 10 in. (8.79 m)

Length [over all with swim platform]not available

Length overall - Detail27 ft. 6 in. (8.38 m)

Length overall - Detail28.00 ft

Length overall - Meters8.38

Length overall - Meters8.53

Length overall - Inches33

Length overall - Inches336

Body / Hull

Hull materialFiberglass

Hull materialnot available

Hull typeDeep Vee

Hull typenot available

Engine and Drivetrain

Engine/s standardVolvo Single V8-320C DP

Engine/s standardnot available

Fuel tank capacity - Detail95 gal. (360 l)

Fuel tank capacity - Detailnot available

Fuel tank capacity - Liters359.61

Fuel tank capacity - Liters302.83

Fuel tank capacity - Gal95

Fuel tank capacity - Gal8

Fuel typeGas or Diesel

Fuel typeGas

Drive typeI/O

Drive typenot available

Horsepower320 php (239 PkW)

Horsepowernot available

Engine max430 php (321 PkW)

Engine maxnot available

Operational Info

HeadPorta Potti

Headnot available

Water capacity10 gal. (38 l)

Water capacity1

Maximum capacityYacht certified

Maximum capacitynot available

Maximum peopleYacht certified

Maximum peoplenot available

Holding tank capacity - Detail10 gal. (38 l)

Holding tank capacity - Detailnot available

Holding tank capacity - Liters37.85

Holding tank capacity - Litersnot available

Holding tank capacity - Gal1

Holding tank capacity - Galnot available

Boat typenot available

Boat typePower

Cobalt Boats 273 2013 vs Cobalt Boats R8 Surf 2021 — Common Questions

Which is the larger boat — the Cobalt Boats 273 2013 or the Cobalt Boats R8 Surf 2021?

The Cobalt Boats R8 Surf 2021 is the longer of the two at 28,0 feet overall. The Cobalt Boats 273 2013 comes in at 27,5 feet, making it roughly 0,5 ft shorter — a meaningful difference in deck room and overall on-water presence.

What is the maximum horsepower rating for these boats?

The Cobalt Boats 273 2013 has a documented max rating of 430 hp. Engine specifications for the Cobalt Boats R8 Surf 2021 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

How many people can each boat hold?

The Cobalt Boats 273 2013 is Coast Guard rated for 8 passengers, while the Cobalt Boats R8 Surf 2021 is certified for 8. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.

Which boat has the larger fuel tank — the Cobalt Boats 273 2013 or the Cobalt Boats R8 Surf 2021?

The Cobalt Boats 273 2013 has the bigger tank at 95 gallons, versus 8 gallons on the Cobalt Boats R8 Surf 2021. That 87-gallon difference translates to roughly 261–435 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Cobalt Boats 273 2013 and Cobalt Boats R8 Surf 2021 from the same manufacturer?

Yes — both the Cobalt Boats 273 2013 and the Cobalt Boats R8 Surf 2021 are built by Cobalt Boats. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.

← Cobalt Boats 273 2013 full specs ← Cobalt Boats R8 Surf 2021 full specs