The Hallberg - Rassy 340 2017 vs Hallberg - Rassy 35 Rasmus Sloop Sloop 1967 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 — Hallberg - Rassy 340 2017 at 35,1 ft versus Hallberg - Rassy 35 Rasmus Sloop Sloop 1967 at 34,5 ft. Weight tells a clearer story for trailering families: the Hallberg - Rassy 340 2017 tips the scales at 13 145 lbs — 1 020 lbs more than the Hallberg - Rassy 35 Rasmus Sloop Sloop 1967 at 12 125 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 — 29 hp for the Hallberg - Rassy 340 2017 and 45 hp for the Hallberg - Rassy 35 Rasmus Sloop Sloop 1967. 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 Hallberg - Rassy 35 Rasmus Sloop Sloop 1967 carries 74 gallons versus 50 gallons in the Hallberg - Rassy 340 2017. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
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 — 13 145 lbs for the Hallberg - Rassy 340 2017 and 12 125 lbs for the Hallberg - Rassy 35 Rasmus Sloop Sloop 1967. Comparable displacement means broadly similar seakeeping behaviour and load capacity, though hull form and ballast ratio will still produce noticeably different sailing characteristics.
Draft is a practical consideration that many buyers underestimate until they're already at the marina. The Hallberg - Rassy 340 2017 draws 6,2 ft, compared to 4,4 ft for the Hallberg - Rassy 35 Rasmus Sloop Sloop 1967. That 1,8-foot difference affects which anchorages you can access, which haul-out facilities will take you, and how carefully you need to read the tide tables in shallower cruising grounds.
The Hallberg - Rassy 340 2017 uses Sloop rigging. Helm style differs too: the Hallberg - Rassy 340 2017 uses a 2 wheels versus a 1 wheel on the Hallberg - Rassy 35 Rasmus Sloop Sloop 1967. Wheel helms give better leverage and visibility on larger boats; tillers offer direct feedback and simplicity on smaller ones. For auxiliary power the Hallberg - Rassy 35 Rasmus Sloop Sloop 1967 carries a 45-hp engine against 29 hp on the Hallberg - Rassy 340 2017. 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 7,7 knots for the Hallberg - Rassy 340 2017 and 7,0 knots for the Hallberg - Rassy 35 Rasmus Sloop Sloop 1967.
Bottom line: The Hallberg - Rassy 340 2017 and Hallberg - Rassy 35 Rasmus Sloop Sloop 1967 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.