When two boats share the same hull type — in this case both the Starcraft Marine Bay 180 2013 and the Starcraft Marine Sport Runabout 172 OB Sport 2013 are modified vee designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — Starcraft Marine Bay 180 2013 at 17,8 ft versus Starcraft Marine Sport Runabout 172 OB Sport 2013 at 16,8 ft. At 135 lbs and 152 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

Both boats share a closely matched power ceiling — 115 hp for the Starcraft Marine Bay 180 2013 and 130 hp for the Starcraft Marine Sport Runabout 172 OB Sport 2013. 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. Both carry nearly identical fuel loads — 24 gal and 23 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Starcraft Marine Sport Runabout 172 OB Sport 2013 is rated for 8 passengers, while the Starcraft Marine Bay 180 2013 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Starcraft Marine Sport Runabout 172 OB Sport 2013 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Starcraft Marine Sport Runabout 172 OB Sport 2013 comes in at 1 lbs per hp versus 1 lbs per hp for the Starcraft Marine Bay 180 2013. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.