The Sea Chaser 1800 CC 2006 vs Sea Chaser 2100 CC 2013 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.
Size is the most obvious dividing line here. The Sea Chaser 2100 CC 2013 measures 21,1 feet overall (2013), giving it roughly 4,1 additional feet of deck space compared to the Sea Chaser 1800 CC 2006 at 17,0 feet (2006). At 185 lbs and 275 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 225 hp, the Sea Chaser 2100 CC 2013 has a 110-hp advantage over the Sea Chaser 1800 CC 2006'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 Sea Chaser 2100 CC 2013 carries 75 gallons versus 3 gallons in the Sea Chaser 1800 CC 2006. 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 CC 2013 is rated for 7 passengers, while the Sea Chaser 1800 CC 2006 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Chaser 2100 CC 2013 could be the deciding factor.
Bottom line: Choose the Sea Chaser 2100 CC 2013 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 1800 CC 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.