Boston Whaler 315 Conquest 2018 boat specs
Boston Whaler
Boston Whaler 315 Conquest 2018
2018
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VS
Boston Whaler 325 Conquest 2022 boat specs
Boston Whaler
Boston Whaler 325 Conquest 2022
2022
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Boston Whaler 315 Conquest 2018 vs Boston Whaler 325 Conquest 2022 — Same Brand, Different Boat

The Boston Whaler 315 Conquest 2018 vs Boston Whaler 325 Conquest 2022 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.

Both boats share a closely matched power ceiling — 300 hp for the Boston Whaler 315 Conquest 2018 and 300 hp for the Boston Whaler 325 Conquest 2022. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Boston Whaler 315 Conquest 2018 carries 291 gallons versus 3 gallons in the Boston Whaler 325 Conquest 2022. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 9 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 Boston Whaler 315 Conquest 2018 and Boston Whaler 325 Conquest 2022 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.
Measurements / Dimensions
Length overall - Detail31.30 ft
Length overall - Detail32.30 ft
Length - Feet31.3
Length - Feet32.3
Length overall - Meters9.54
Length overall - Meters9.85
Length overall - Inches376
Length overall - Inches388
Beam10.80 ft
Beam10.80 ft
Beam - Meters3.29
Beam - Meters3.29
Beam - Inches130
Beam - Inches130
Draft Minnot available
Draft Min2.20 ft
Engine and Drivetrain
Fuel tank capacity - Gal291
Fuel tank capacity - Gal3
Fuel tank capacity - Liters1101.55
Fuel tank capacity - Liters1135.62
Engine makeMercury
Engine makeMercury
Engine modelV8 Verado
Engine modelVerado
Horsepower300 hp
Horsepower300 hp
Fuel typeGas
Fuel typeGas
Drive typeoutboard
Drive typeoutboard
Engine 2 Engine MakeMercury
Engine 2 Engine MakeMercury
Engine 2 Engine ModelV8 Verado
Engine 2 Engine ModelVerado
Engine 2 Horsepower300 hp
Engine 2 Horsepower300 hp
Engine 2 Drive Typeoutboard
Engine 2 Drive Typeoutboard
Engine 2 Fuel Typenot available
Engine 2 Fuel TypeGas
Operational Info
Cabins1
Cabinsnot available
Water capacity46
Water capacity46
Holding tank capacity - Gal7
Holding tank capacity - Gal12
Holding tank capacity - Liters26.5
Holding tank capacity - Liters45.42
Boat typePower
Boat typePower
Headnot available
Head1

Boston Whaler 315 Conquest 2018 vs Boston Whaler 325 Conquest 2022 — Common Questions

Which is the larger boat — the Boston Whaler 315 Conquest 2018 or the Boston Whaler 325 Conquest 2022?
The Boston Whaler 325 Conquest 2022 is the longer of the two at 32,3 feet overall. The Boston Whaler 315 Conquest 2018 comes in at 31,3 feet, making it roughly 1,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
How many people can each boat hold?
The Boston Whaler 315 Conquest 2018 is Coast Guard rated for 9 passengers, while the Boston Whaler 325 Conquest 2022 is certified for 9. 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.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Boston Whaler 315 Conquest 2018 and Boston Whaler 325 Conquest 2022 share an 10.80 ft beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
Which boat has the larger fuel tank — the Boston Whaler 315 Conquest 2018 or the Boston Whaler 325 Conquest 2022?
The Boston Whaler 315 Conquest 2018 has the bigger tank at 291 gallons, versus 3 gallons on the Boston Whaler 325 Conquest 2022. That 288-gallon difference translates to roughly 864–1440 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Boston Whaler 315 Conquest 2018 and Boston Whaler 325 Conquest 2022 from the same manufacturer?
Yes — both the Boston Whaler 315 Conquest 2018 and the Boston Whaler 325 Conquest 2022 are built by Boston Whaler. 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.