RFB X-114 aerofoil boat (Lippisch, 1977) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/rfb-x-114/  (sheet CC BY 4.0)
Basis: Secondary source: Wikipedia, 1000aircraftphotos.com (Friendship Bulletin 1977), The Maldives National Journal of Research (H. Hameed, 2019) (copy of the maker's figures; the maker publishes none directly)
Catalog version: 2026-10-20

Overall (mm): length 12800, width 7000, height 2900
- The X-114 was RFB's six-seat reverse-delta aerofoil boat, evaluated by the West German military; one was built.
- The file is a 12.80 × 7.00 × 2.90 m box (Wikipedia, Jane's). Another table gives an 8.77 m span, so span differs by source (the 7 m figure also appears in a 1977 RFB bulletin).
- Marked secondary.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

dimension  value
Length  12.80 m (42 ft 0 in)
Wingspan  7.00 m (23 ft 0 in)
Height  2.90 m (9 ft 6 in)
Alternative table (Hameed 2019, after Yun et al.)  12.83 m × 8.77 m span × 2.92 m
Empty weight  1,000 kg
Maximum take-off weight  1,500 kg
Engine  1 × Lycoming IO-360 flat-four, 150 kW (200 hp)
Propeller  5-blade ducted pusher
Cruise speed in ground effect  150 km/h
Range  about 2,000 km in ground effect
Endurance  20 h
Capacity  1 crew + 5–6 passengers
First flight  April 1977

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: RFB X-114 — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/RFB_X-114
- 1000aircraftphotos.com (Friendship Bulletin 1977): The Airfoilboat Story — web — Publisher's page; dimensions are facts — https://1000aircraftphotos.com/Contributions/Visschedijk/10307.htm
- The Maldives National Journal of Research (H. Hameed, 2019): The design of a four-seat reverse delta WIG craft, Table 1 — web — Publisher's page; dimensions are facts — https://mnjr.mnu.edu.mv/journal/article/download/97/66

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/rfb-x-114/index.json
API: https://xemstudio.com/api/geometry?object=rfb-x-114