The Grand Soleil GS 39 2020 vs Grand Soleil GS 45 - J&V Shoal draft Shoal draft 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.
Size is the most obvious dividing line here. The Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 measures 45,7 feet overall (2004), giving it roughly 5,7 additional feet of deck space compared to the Grand Soleil GS 39 2020 at 40,0 feet (2020). Weight tells a clearer story for trailering families: the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 tips the scales at 21 164 lbs — 4 960 lbs less than the Grand Soleil GS 39 2020 at 16 204 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 55 hp, the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 has a 26-hp advantage over the Grand Soleil GS 39 2020's 29-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 carries 61 gallons versus 49 gallons in the Grand Soleil GS 39 2020. 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 45 - J&V Shoal draft Shoal draft 2004 is rated for 13 passengers, while the Grand Soleil GS 39 2020 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 displaces 21 164 lbs — a 4 960-lb difference over the Grand Soleil GS 39 2020 at 16 204 lbs. That gap separates two entirely different categories of sailing: the heavier boat is built for offshore passage-making and load-carrying, while the lighter hull rewards performance sailing and easier handling in lighter air.
Both boats draw a similar depth — 7,1 ft and 6,5 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Grand Soleil GS 39 2020 uses fractional_rig_sloop rigging. Helm style differs too: the Grand Soleil GS 39 2020 uses a 2 wheels versus a 1 wheel on the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004. Wheel helms give better leverage and visibility on larger boats; tillers offer direct feedback and simplicity on smaller ones. For auxiliary power the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 carries a 55-hp engine against 29 hp on the Grand Soleil GS 39 2020. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
Hull speed is rated at 8,4 knots for the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 and 7,8 knots for the Grand Soleil GS 39 2020. For extended cruising, water capacity matters: the Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 carries 106 gallons versus 85 gallons on the Grand Soleil GS 39 2020 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.
Bottom line: The Grand Soleil GS 45 - J&V Shoal draft Shoal draft 2004 is the offshore and bluewater choice — at 21 164 lbs displacement and 46 ft it has the load capacity, range, and seakeeping for extended passages. The Grand Soleil GS 39 2020 at 16 204 lbs is the more nimble, accessible option — easier to single-hand and better suited to coastal and inland sailing.