https://aomedia.org/specifications/
AOMedia Specifications | Alliance for Open Media
An Alliance of Global Media Innovators
open mediaaomediaspecificationsalliance
https://theboatdb.com/boat/birchwood-420-open-2004
2004 Birchwood 420 Open Specifications & Data | TheBoatDB
2004 Birchwood 420 Open specifications: 42.6 ft LOA, 12.6 ft beam, 3.6 ft draft, Monohull. Full dimensions, performance ratios and data, free on TheBoatDB.
open specificationsbirchwooddata
https://labs.etsi.org/rep/top/tdl-meta-model/-/blob/master/LICENSE.txt
LICENSE.txt · master · TDL Open Source / TDL Meta Model and Specifications · GitLab
UML Meta-model representation and artifacts related to the TDL specifications
open sourcemeta modellicensetxtmaster