Matching a modified vee Sea Chaser 180 FS 2009 against a deep vee Sea Chaser 2100 WA 2011 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.
Size is the most obvious dividing line here. The Sea Chaser 2100 WA 2011 measures 21,1 feet overall (2011), giving it roughly 4,1 additional feet of deck space compared to the Sea Chaser 180 FS 2009 at 17,0 feet (2009). Weight tells a clearer story for trailering families: the Sea Chaser 2100 WA 2011 tips the scales at 293 lbs — 121 lbs less than the Sea Chaser 180 FS 2009 at 172 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 225 hp, the Sea Chaser 2100 WA 2011 has a 75-hp advantage over the Sea Chaser 180 FS 2009's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sea Chaser 2100 WA 2011 carries 75 gallons versus 33 gallons in the Sea Chaser 180 FS 2009. 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 Sea Chaser 2100 WA 2011 is rated for 7 passengers, while the Sea Chaser 180 FS 2009 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Chaser 2100 WA 2011 could be the deciding factor.
Bottom line: Choose the Sea Chaser 2100 WA 2011 if your priority is putting more people on the water — it handles 7 passengers and at 21,1 ft it has the deck room to back that rating up comfortably. The Sea Chaser 180 FS 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.