Planing monohull — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/planing-hull/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Catalog version: 2026-10-20

Sizes: see table below
- A planing hull rises onto the surface at speed so dynamic lift replaces most buoyancy, letting it exceed displacement hull speed (Good Old Boat; Wikipedia, Hydroplane).
- Planing lift comes from the bottom pushing water down; flat pads at the chine add lift to get on plane sooner (Boat Blurb).
- 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.

parameter  value or range  source
Displacement limit exceeded by  dynamic lift  Good Old Boat
Chine flat  about 1-2 in pad  Boat Blurb

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Good Old Boat: Displacement hull speed 101 — web — Publisher's page; dimensions are facts — https://goodoldboat.com/displacement-hull-speed-101/
- Wikipedia: Hydroplane (boat) — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/Hydroplane_(boat)
- Boat Blurb: Where is a chine on a boat and what does it do? — web — Publisher's page; dimensions are facts — https://www.boatblurb.com/post/where-is-a-chine-on-a-boat-and-what-does-it-do

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/planing-hull/index.json
API: https://xemstudio.com/api/geometry?object=planing-hull