Seller's Description
This is a fun, fast boat, designed by well known and respected multihull designer Dick Newick. 1978 Factory built hull #28 New moon amas, all glass hulls, aluminum crossbeams and corner castings 4 extra corner castings included Sunrise Trampoline 5/32” wire waterstays Hobie 18 mast with one set of of diamonds. Hobie 18 boom All running rigging, halyards and sheets are spectra or vectran. 4 ft centerboard Sails: Main -Hobie 18. In decent shape, purple and red, halyard lock with Aussie ring halyard shackle, 3:1 downhaul. For racing one might want to replace the sail. For day sailing it’s fine. Jib Custom designed Doyle dacron with window and one reefing point, hanks on the forestay and is hoisted by 3:1 halyard (to reduce mast compression) and 4:1 jib down haul. The jib is non overlappin with 4 full battens, trims to Harken blocks on the forward crossbeam and sheets lead to cam cleats on the aft wall of the cockpit for easy singlehanding. Spinnaker: Neil Pryd adsymmetric, tacks to a harken block on the bow. Rudder bracket build with G10 plates instead of aluminum. 2:1 rudder uphaul via Ronstan camcleats at the end of the tiller. Carbon 7 ft tiller with / ft carbon tiller extension Motor mount. No motor included Trailer Boat photos were taken right after the last time we painted the hulls. They could use another coat of paint and a bit of epoxy touch up on a few cracks on the port ama.
Equipment: as described above
Specs
- Designer
- Dick Newick
- Builder
- Tremelino Boat Co.
- Associations
- ?
- # Built
- ?
- Hull
- Monohull
- Keel
- ?
- Rudder
- ?
- Construction
- FG
Dimensions
- Length Overall
- 22′ 10″ / 7 m
- Waterline Length
- 22′ 11″ / 7 m
- Beam
- 18′ 0″ / 5.5 m
- Draft
- 1′ 2″ / 0.4 m — 0′ 11″ / 0.3 m
- Displacement
- 950 lb / 431 kg
- Ballast
- ?
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 326′² / 30.3 m²
- Total Sail Area
- ?
Mainsail
- Sail Area
- ?
- P
- ?
- E
- ?
- Air Draft
- ?
Foresail
- Sail Area
- ?
- I
- ?
- J
- ?
- Forestay Length
- ?
Auxilary Power
- Make
- ?
- Model
- ?
- HP
- ?
- Fuel Type
- ?
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 2
Calculations
- Hull Speed
-
11.5 kn
Classic: 6.14 kn
Hull Speed
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Formula
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
- Sail Area/Displacement
-
54.0
>20: high performance
Sail Area / Displacement Ratio
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
Formula
SA/D = SA ÷ (D ÷ 64)2/3
- SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
- D: Displacement in pounds.
- Ballast/Displacement
- ?
Ballast / Displacement Ratio
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Formula
Ballast / Displacement * 100
- Displacement/Length
-
45.8
<100: Ultralight
Displacement / Length Ratio
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
Formula
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
- D: Displacement of the boat in pounds.
- LWL: Waterline length in feet
- Comfort Ratio
-
1.6
<20: lightweight racing boat
Comfort Ratio
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Formula
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
- D: Displacement of the boat in pounds
- LWL: Waterline length in feet
- LOA: Length overall in feet
- Beam: Width of boat at the widest point in feet
- Capsize Screening
-
6.7
>2.0: better suited for coastal cruising
Capsize Screening Formula
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
Formula
CSV = Beam ÷ ³√(D / 64)
- Beam: Width of boat at the widest point in feet
- D: Displacement of the boat in pounds
Notes
The original Tremolino was designed to use the rig and hulls (for the akas) from a Hobie 16.
Shown here are a portion of the plans for the home builder. Later, another model, the T-Gull 23, was offered with a similar main hull, but with larger, folding, (non-Hobie) floats.
This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.
