#293, 18.7' x 7.3', Deep V Twin Tunnel (DVTT)
Lineage:
We describe this hull shape as a Deep V, Twin Tunnel (DVTT). It is a hybrid between a deep V hull and a tri-hull, with notable differences and details. The center hull is more prominent (and deeper) than a tri-hull or cathedral hull. While it carries 20 degrees of transom deadrise the outer hulls, which are in a sense extra-large down turned chines, provide additional displacement and stability (decreasing draft and increasing load capacity) that would not exist in a typical V hull. Further, there are nuances to the forward transitions that enable the hull to be dry, comfortable in a chop, and efficient due to trapped air.
The 18.8' hull pictured is a larger, deeper and more robust version of our 15.5-18.5' footers that were developed primarily as small fire/rescue boats. This particular design kit was developed for a municipal work and buoy application, but an alternate layout of the same hull (last 3 photos above) has been built by Velazquez Welding. The balance of our DVTT hulls, which include a 21' and a 26' have been built by Viking Welding.
Particulars:
Length (hull):
Beam (hull):
Wt. as rigged:
Wt. Bare Hull:
Deadrise Angles-
Transom:
Sta. 4:
Cutwater:
18' - 8"
7' - 3 1/2" (w/o rub rails)
2,158# (115hp OB)
1,549# (w/ console)
20
21.5
60
Scantlings:
Bottom:
Bot. Stringers:
Chine Flats:
Sides:
Decks:
Transverse Frames:
Transom:
.190"
3" x .250"
.190"
.190"
.190"
.190", Flanged
.250"
Stock Weight (approx.)-
Blank Plate: 1,987#
Extrusion: 308#