Detailed Evaluation & Buyer Recommendation
Boston Whaler 170 Montauk 2022 vs Boston Whaler 315 Conquest 2018 — Same Brand, Different Boat
The Boston Whaler 170 Montauk 2022 vs Boston Whaler 315 Conquest 2018 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 power gap is worth calling out. Rated to 300 hp, the Boston Whaler 315 Conquest 2018 has a 185-hp advantage over the Boston Whaler 170 Montauk 2022's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Boston Whaler 315 Conquest 2018 carries 291 gallons versus 25 gallons in the Boston Whaler 170 Montauk 2022. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Boston Whaler 315 Conquest 2018 is rated for 9 passengers, while the Boston Whaler 170 Montauk 2022 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Boston Whaler 315 Conquest 2018 could be the deciding factor.
Bottom line: Choose the Boston Whaler 315 Conquest 2018 if your priority is putting more people on the water — it handles 9 passengers and at 31,3 ft it has the deck room to back that rating up comfortably. The Boston Whaler 170 Montauk 2022 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.
Measurements / Dimensions
Length overall - Detail17.40 ft
Length overall - Detail31.30 ft
Length - Feet17.4
Length - Feet31.3
Length overall - Meters5.3
Length overall - Meters9.54
Length overall - Inches209
Length overall - Inches376
Beam - Meters2.23
Beam - Meters3.29
Beam - Inches88
Beam - Inches130
Draft [max] - Detail12.00 ft
Draft [max] - Detailnot available
Draft [max] - Meters3.66
Draft [max] - Metersnot available
Draft [max] - Inches144
Draft [max] - Inchesnot available
Draft Min1.00 ft
Draft Minnot available
Engine and Drivetrain
Fuel tank capacity - Gal25
Fuel tank capacity - Gal291
Fuel tank capacity - Liters94.64
Fuel tank capacity - Liters1101.55
Engine makeMercury
Engine makeMercury
Horsepower115 hp
Horsepower300 hp
Drive typeoutboard
Drive typeoutboard
Engine modelnot available
Engine modelV8 Verado
Engine 2 Engine Makenot available
Engine 2 Engine MakeMercury
Engine 2 Engine Modelnot available
Engine 2 Engine ModelV8 Verado
Engine 2 Horsepowernot available
Engine 2 Horsepower300 hp
Engine 2 Drive Typenot available
Engine 2 Drive Typeoutboard
Operational Info
TrailerableYes
Trailerablenot available
Boat typePower
Boat typePower
Cabinsnot available
Cabins1
Water capacitynot available
Water capacity46
Holding tank capacity - Galnot available
Holding tank capacity - Gal7
Holding tank capacity - Litersnot available
Holding tank capacity - Liters26.5