The Gib Sea Gib'Sea 105 - Plus Plus 1980 vs Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983 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 — Gib Sea Gib'Sea 105 - Plus Plus 1980 at 34,4 ft versus Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983 at 33,1 ft. Weight tells a clearer story for trailering families: the Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983 tips the scales at 11 684 lbs — 1 543 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 28 hp for the Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983. 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. Both carry nearly identical fuel loads — 26 gal and 26 gal — so range won't be a tiebreaker here.
Both boats are rated for 10 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Both boats sit in a similar displacement bracket — 10 141 lbs for the Gib Sea Gib'Sea 105 - Plus Plus 1980 and 11 684 lbs for the Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983. 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 — 5,1 ft and 5,8 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Gib Sea Gib'Sea 105 - Plus Plus 1980 is rigged as a Sloop while the Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983 carries fractional_rig_sloop rigging — a meaningful difference in sail handling complexity, upwind performance, and the size of crew you'll need to work the boat comfortably.
Hull speed is rated at 7,3 knots for the Gib Sea Gib'Sea 105 - Plus Plus 1980 and 7,0 knots for the Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983. For extended cruising, water capacity matters: the Gib Sea Gib'Sea 105 - Plus Plus 1980 carries 85 gallons versus 66 gallons on the Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.
Bottom line: The Gib Sea Gib'Sea 105 - Plus Plus 1980 and Gib Sea Gib'Sea 96 - Deep draft Deep draft 1983 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.