The Crestliner Canadian Series 18 SC 2009 vs Crestliner Sportfish 1750 O/B 2005 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.
On paper these two are close siblings in the size department - Crestliner Canadian Series 18 SC 2009 at 18,0 ft versus Crestliner Sportfish 1750 O/B 2005 at 17,0 ft. Weight tells a clearer story for trailering families: the Crestliner Sportfish 1750 O/B 2005 tips the scales at 1 300 lbs - 490 lbs less than the Crestliner Canadian Series 18 SC 2009 at 810 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 140 hp, the Crestliner Sportfish 1750 O/B 2005 has a 65-hp advantage over the Crestliner Canadian Series 18 SC 2009's 75-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Crestliner Sportfish 1750 O/B 2005 carries 33 gallons versus 17 gallons in the Crestliner Canadian Series 18 SC 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 Crestliner Sportfish 1750 O/B 2005 is rated for 6 passengers, while the Crestliner Canadian Series 18 SC 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crestliner Sportfish 1750 O/B 2005 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Crestliner Sportfish 1750 O/B 2005 comes in at 9 lbs per hp versus 11 lbs per hp for the Crestliner Canadian Series 18 SC 2009. 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 Crestliner Sportfish 1750 O/B 2005 if your priority is putting more people on the water - it handles 6 passengers and at 17,0 ft it has the deck room to back that rating up comfortably. The Crestliner Canadian Series 18 SC 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.