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Modified-V (semi-V) hull

What is a modified-V hull? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: modified v hull, semi v hull, modified vee, moderate deadrise, bay boat hull, 17 degree deadrise, shallow v hull, rc shallow vee, modified v vs deep v

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

sizes
2 in table

Notes

  • A modified-V has moderate transom deadrise, mostly 17-20 deg, trading some of a deep-V's soft ride for better stability and fuel efficiency (BoatTest).
  • RC builders describe shallow-V hulls as faster in calm water and deep-V as better in rough water (SV Design).
  • 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.

Modified-V (semi-V) hull size chart

parametervalue or rangesource
Modified-V transom deadrisemostly 17-20 degBoatTest
Moderate-V (RC notes)15-20 degSV Design (Stealthwake)

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

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

modified-v-hull-hullmodified v hull, 585 × 181 mm, deadrise 18° (sections illustrative, scale to your boat)STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=modified-v-hull

Modified-V (semi-V) hull, isometric render of a generated part
Render of modified-v-hull-hull from the free STEP; not to scale.

Fits with

Deep-V hull, isometric render of a generated part
Deep-V hull6 sizes★ 1 file
Flat-bottom hull, isometric render of a generated part
Flat-bottom hull1 sizes★ 1 file
Cathedral (tri-hull), isometric render of a generated part
Cathedral (tri-hull)2 sizes★ 1 file
Tunnel hull (tunnel catamaran), isometric render of a generated part
Tunnel hull (tunnel catamaran)4 sizes★ 1 file
Three-point hydroplane, isometric render of a generated part
Three-point hydroplane4 sizes★ 1 file
Stepped hull, isometric render of a generated part
Stepped hull3 sizes★ 1 file

Questions

Is it faster?

Shallow-V hulls are faster in calm water (SV Design).