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Deep-V hull

What is a deep-V hull and how much deadrise does it have? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: deep v hull, deep vee, deadrise angle, deep v boat, rc deep vee, mono hull rc boat, v hull deadrise, 24 degree deadrise, deep v vs modified v, rough water hull, offshore hull

Exact dimensions. True size, with no printing tolerance added.

sizes
6 in table

Notes

  • Deadrise is the angle between the bottom and horizontal on each side of the keel. Deep-V hulls run about 21-25 deg at the transom, which slices through chop for a smoother, drier ride (BoatTest).
  • The cost is efficiency and stability: deep-Vs are harder to push, need more power, are more trim-sensitive and can roll at rest (BoatTest).
  • In RC, deep-V monos are preferred for heat racing in rough water; one builder's notes put deep-V at about 21-26 deg and recommend 19-23 deg for heat racing (SV Design).
  • Used on: Pro Boat Stealthwake (RC, 20 deg transom).
  • The file is a reference example built by Xem Studio from the numbers above (Reference RC mono: 585 mm length and 20 deg transom deadrise (SV Design Stealthwake data); 181 mm is an unlabelled width in the same source's deadrise diagram.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

Deep-V hull size chart

parametervalue or rangesource
Deep-V transom deadrise21-25 deg (25 rare)BoatTest
Variable deadriseup to 60 deg forefoot, 30-45 deg amidshipsBoatTest
RC deep-V rangeabout 21-26 degSV Design (Stealthwake)
RC heat-racing sweet spot19-23 degSV Design (Stealthwake)
RC mono CG25-35% of length from transom, ~30% targetSV Design (Stealthwake)
RC mono CG (racer)about 28-30% with half tankModel Gas Boats forum

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

BoatTestTo Deep-V or Not to Deep-VwebPublisher's page; dimensions are facts
SV DesignPro Boat Stealthwake upgrades info (Feb 2022)webPublisher's page; dimensions are facts
Model Gas Boats forumNeed help setting up a mono for the first timewebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

deep-v-hull-hulldeep v hull, 585 × 181 mm, deadrise 22° (sections illustrative, scale to your boat)STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=deep-v-hull

Deep-V hull, isometric render of a generated part
Render of deep-v-hull-hull from the free STEP; not to scale.

Fits with

Questions

Why does a deep-V use more power?

More deadrise means less lift per wetted area, so it is harder to push (BoatTest).