Both the Mainship 45 Trawler 2010 and the Mainship Expedition 2008 are semi-displacement designs, both built in fibreglass, so 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 - Mainship 45 Trawler 2010 at 43,0 ft versus Mainship Expedition 2008 at 41,0 ft. Weight tells a clearer story for trailering families: the Mainship 45 Trawler 2010 tips the scales at 40 000 lbs - 16 000 lbs more than the Mainship Expedition 2008 at 24 000 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 440 hp, the Mainship 45 Trawler 2010 has a 180-hp advantage over the Mainship Expedition 2008's 260-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Mainship 45 Trawler 2010 carries 777 gallons versus 300 gallons in the Mainship Expedition 2008. 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 Mainship 45 Trawler 2010 is rated for 13 passengers, while the Mainship Expedition 2008 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Mainship 45 Trawler 2010 could be the deciding factor.