Matching a tri-hull Tidewater Boats 1672 2011 against a modified vee Tidewater Boats 1800 Bay Max 2013 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department — Tidewater Boats 1672 2011 at 16,0 ft versus Tidewater Boats 1800 Bay Max 2013 at 18,2 ft. At 75 lbs and 12 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.
The power gap is worth calling out. Rated to 115 hp, the Tidewater Boats 1800 Bay Max 2013 has a 65-hp advantage over the Tidewater Boats 1672 2011's 50-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Tidewater Boats 1672 2011 carries 12 gallons versus 4 gallons in the Tidewater Boats 1800 Bay Max 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 Tidewater Boats 1800 Bay Max 2013 is rated for 6 passengers, while the Tidewater Boats 1672 2011 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Tidewater Boats 1800 Bay Max 2013 could be the deciding factor.
Bottom line: Choose the Tidewater Boats 1800 Bay Max 2013 if your priority is putting more people on the water — it handles 6 passengers and at 18,2 ft it has the deck room to back that rating up comfortably. The Tidewater Boats 1672 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.