The Odyssey 218C 2006 vs Odyssey Millennium 1702M 2004 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 — Odyssey 218C 2006 at 18,0 ft versus Odyssey Millennium 1702M 2004 at 16,0 ft. Weight tells a clearer story for trailering families: the Odyssey 218C 2006 tips the scales at 153 lbs — 138 lbs more than the Odyssey Millennium 1702M 2004 at 15 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 Odyssey 218C 2006 carries a rated maximum of 75 hp. Engine data for the Odyssey Millennium 1702M 2004 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The Odyssey Millennium 1702M 2004 is rated for 11 passengers, while the Odyssey 218C 2006 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Odyssey Millennium 1702M 2004 could be the deciding factor.
The Odyssey 218C 2006 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Odyssey Millennium 1702M 2004 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Choose the Odyssey Millennium 1702M 2004 if your priority is putting more people on the water — it handles 11 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Odyssey 218C 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.