When two boats share the same hull type — in this case both the Navigator Yachts Navigator 4800 2009 and the Navigator Yachts Navigator 5100 2013 are deep vee designs with fiberglass 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 — Navigator Yachts Navigator 4800 2009 at 49,2 ft versus Navigator Yachts Navigator 5100 2013 at 51,7 ft. At 44 lbs and 5 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 Navigator Yachts Navigator 4800 2009 carries a rated maximum of 370 hp. Engine data for the Navigator Yachts Navigator 5100 2013 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Both carry nearly identical fuel loads — 5 gal and 6 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Navigator Yachts Navigator 5100 2013 is rated for 15 passengers, while the Navigator Yachts Navigator 4800 2009 caps at 14. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Navigator Yachts Navigator 5100 2013 could be the deciding factor.