{"schemaVersion":1,"record":{"key":"mechanic/vehicles-racing--t147","type":"mechanic","id":"vehicles-racing--t147","lang":"en","title":"Marine vehicles and submersibles","summary":"Marine controls connect inertia and environment to routing, while submersibles add depth choice and limited visibility.","updatedAt":"2026-10-22","status":"active","url":"https://gamemechanics.pro/en/knowledge/mechanic/vehicles-racing--t147/","jsonUrl":"https://gamemechanics.pro/api/v1/knowledge/en/mechanic/vehicles-racing--t147.json","markdownUrl":"https://gamemechanics.pro/content/knowledge/en/mechanic/vehicles-racing--t147.md","aliases":["Ships and underwater craft"],"tags":["Vehicles, racing and machinery","Mechanics and variants"],"sourceIds":["source-8cc54cd9f9a5c8e8","source-a62ae5b62aeabe68","source-4e22a7f341a5d0ce"],"sources":[{"id":"source-8cc54cd9f9a5c8e8","title":"Godot: Physics introduction","url":"https://docs.godotengine.org/en/stable/tutorials/physics/physics_introduction.html","verifiedAt":null},{"id":"source-a62ae5b62aeabe68","title":"OpenTTD: About","url":"https://www.openttd.org/about","verifiedAt":null},{"id":"source-4e22a7f341a5d0ce","title":"Subnautica","url":"https://store.steampowered.com/app/264710/","verifiedAt":null}],"sections":[{"id":"principle","title":"How it works","body":"Marine controls connect inertia and environment to routing, while submersibles add depth choice and limited visibility."},{"id":"variants","title":"Variants","body":"### Mechanic variants\n\n<a id=\"t147-variants\"></a>\n\n- Inertia requires starting braking early. <a id=\"t147-v1\"></a>\n- Currents change paths relative to the map. <a id=\"t147-v2\"></a>\n- Draft limits the depth of usable passages. <a id=\"t147-v3\"></a>\n- Sonar provides incomplete views of hidden obstacles. <a id=\"t147-v4\"></a>"},{"id":"example","title":"Design example","body":"A tug begins turning before entering a narrow channel to account for a cross-current.\n\nPrototype check: Test the distinction between water-relative and shore-relative speed when both affect game rules."},{"id":"context","title":"Context and limits","body":"Vehicle mechanics connect controls, momentum, routes and machine condition; the chosen simplifications should stay consistent. Each overview separates player actions, state changes and alternative rules. Examples are hypothetical design scenarios, not claims about a named game. A prototype check states an observable question for the next iteration. Existing detailed references remain separately linked from the direction map."}],"relations":[{"type":"uses","direction":"outgoing","label":"Sources in the selection","key":"resource/godot-physics","title":"Godot: physics introduction","url":"https://gamemechanics.pro/en/resources/#resource-godot-physics","jsonUrl":"https://gamemechanics.pro/api/v1/knowledge/en/resource/godot-physics.json","markdownUrl":"https://gamemechanics.pro/content/knowledge/en/resource/godot-physics.md"}],"placements":[{"catalogId":"vehicles-racing","id":"t147","title":"Vehicles, racing and machinery","url":"https://gamemechanics.pro/en/mechanics/vehicles-racing/#t147","categoryIds":["mechanics"]}],"supersededBy":[],"attributes":{"preview":{"updatedAt":"2026-10-22","title":"Ships and underwater craft","description":"Marine controls connect inertia and environment to routing, while submersibles add depth choice and limited visibility.","image":{"src":"images/mechanics/subnautica-prawn.webp","width":1440,"height":810,"game":"Subnautica","sourceUrl":"https://store.steampowered.com/app/264710/","originalUrl":"https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/264710/ss_883a98ad56021ce409219e1b749818866b6115cd.1920x1080.jpg?t=1777456112","credit":"Unknown Worlds Entertainment","rights":"© Unknown Worlds Entertainment. All rights reserved.","caption":"An exosuit on the seabed","alt":"Subnautica: a Prawn Suit with two legs and mechanical arms stands before an enormous skeleton on the seabed.","markers":[{"x":80,"y":73,"label":"The pilotable Prawn Suit exosuit"}]},"tips":["Show inertia, depth and visibility limits before a difficult approach."],"examples":[{"title":"Subnautica","url":"https://store.steampowered.com/app/264710/"}]}},"endsAt":null,"provenance":"Original bilingual editorial overviews authored for gamemechanics.pro on 2026-10-20 and reviewed on 2026-10-21. Scenarios are hypothetical design examples; prototype checks describe work to perform, not completed playtests. Primary sources support the stated techniques and implementation context, not every proposed variant.","license":"CC-BY-4.0","codeLicense":"MIT","attribution":"gamemechanics.pro contributors","catalogKey":"catalog/vehicles-racing"}}