When two boats share the same hull type — in this case both the Starcraft Marine Bay 170 2013 and the Starcraft Marine Starfish 176 2012 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 170 2013 at 16,5 ft versus Starcraft Marine Starfish 176 2012 at 17,7 ft. Weight tells a clearer story for trailering families: the Starcraft Marine Starfish 176 2012 tips the scales at 1 176 lbs — 115 lbs less than the Starcraft Marine Bay 170 2013 at 1 061 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 150 hp, the Starcraft Marine Starfish 176 2012 has a 35-hp advantage over the Starcraft Marine Bay 170 2013'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 Starcraft Marine Starfish 176 2012 carries 32 gallons versus 19 gallons in the Starcraft Marine Bay 170 2013. 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 Starcraft Marine Starfish 176 2012 is rated for 7 passengers, while the Starcraft Marine Bay 170 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 Starfish 176 2012 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Starcraft Marine Starfish 176 2012 comes in at 8 lbs per hp versus 9 lbs per hp for the Starcraft Marine Bay 170 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.
Bottom line: Choose the Starcraft Marine Starfish 176 2012 if your priority is putting more people on the water — it handles 7 passengers and at 17,7 ft it has the deck room to back that rating up comfortably. The Starcraft Marine Bay 170 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.