The Grand Soleil GS 45 2010 vs Grand Soleil GS 46 2008 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 — Grand Soleil GS 45 2010 at 45,7 ft versus Grand Soleil GS 46 2008 at 46,2 ft. Weight tells a clearer story for trailering families: the Grand Soleil GS 46 2008 tips the scales at 22 487 lbs — 1 323 lbs less than the Grand Soleil GS 45 2010 at 21 164 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.
Both boats share a closely matched power ceiling — 55 hp for the Grand Soleil GS 45 2010 and 55 hp for the Grand Soleil GS 46 2008. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Grand Soleil GS 46 2008 carries 66 gallons versus 61 gallons in the Grand Soleil GS 45 2010. 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 Grand Soleil GS 46 2008 is rated for 14 passengers, while the Grand Soleil GS 45 2010 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Grand Soleil GS 46 2008 could be the deciding factor.
Both boats sit in a similar displacement bracket — 21 164 lbs for the Grand Soleil GS 45 2010 and 22 487 lbs for the Grand Soleil GS 46 2008. Comparable displacement means broadly similar seakeeping behaviour and load capacity, though hull form and ballast ratio will still produce noticeably different sailing characteristics.
Both boats draw a similar depth — 7,6 ft and 8,5 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Grand Soleil GS 45 2010 uses fractional_rig_sloop rigging. Helm style differs too: the Grand Soleil GS 45 2010 uses a 1 wheel versus a 2 wheels on the Grand Soleil GS 46 2008. Wheel helms give better leverage and visibility on larger boats; tillers offer direct feedback and simplicity on smaller ones.
Hull speed is rated at 8,5 knots for the Grand Soleil GS 46 2008 and 8,4 knots for the Grand Soleil GS 45 2010. For extended cruising, water capacity matters: the Grand Soleil GS 46 2008 carries 118 gallons versus 106 gallons on the Grand Soleil GS 45 2010 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.
Bottom line: The Grand Soleil GS 45 2010 and Grand Soleil GS 46 2008 are closely matched on paper. A sea trial on both in representative conditions is the only reliable way to find which one suits your sailing style, home port, and intended cruising ground.