When two boats share the same hull type — in this case both the Maritime 18 Defiant 2013 and the Maritime 18-D 2009 are modified vee designs with composite construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department — Maritime 18 Defiant 2013 at 18,5 ft versus Maritime 18-D 2009 at 18,0 ft. At 16 lbs and 16 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 Maritime 18 Defiant 2013 carries a rated maximum of 115 hp. Engine data for the Maritime 18-D 2009 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Both carry nearly identical fuel loads — 29 gal and 29 gal — so range won't be a tiebreaker here.
Both boats are rated for 7 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The Maritime 18 Defiant 2013 and Maritime 18-D 2009 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.