The Gib Sea Gib'Sea 105 - Plus Plus 1980 vs Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 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 Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 measures 37,7 feet overall (1987), giving it roughly 3,3 additional feet of deck space compared to the Gib Sea Gib'Sea 105 - Plus Plus 1980 at 34,4 feet (1980). Weight tells a clearer story for trailering families: the Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 tips the scales at 16 094 lbs — 5 953 lbs less than the Gib Sea Gib'Sea 105 - Plus Plus 1980 at 10 141 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 — 28 hp for the Gib Sea Gib'Sea 105 - Plus Plus 1980 and 27 hp for the Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987. 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 Gib Sea Gib'Sea 105 - Plus Plus 1980 carries 26 gallons versus 21 gallons in the Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987. 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 Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 is rated for 11 passengers, while the Gib Sea Gib'Sea 105 - Plus Plus 1980 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 displaces 16 094 lbs — a 5 953-lb difference over the Gib Sea Gib'Sea 105 - Plus Plus 1980 at 10 141 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 — 5,1 ft and 6,1 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Gib Sea Gib'Sea 105 - Plus Plus 1980 uses Sloop rigging.
Hull speed is rated at 7,5 knots for the Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 and 7,3 knots for the Gib Sea Gib'Sea 105 - Plus Plus 1980.
Bottom line: The Gib Sea Gib'Sea 372 - Deep draft Deep draft 1987 is the offshore and bluewater choice — at 16 094 lbs displacement and 38 ft it has the load capacity, range, and seakeeping for extended passages. The Gib Sea Gib'Sea 105 - Plus Plus 1980 at 10 141 lbs is the more nimble, accessible option — easier to single-hand and better suited to coastal and inland sailing.