F.-A. Forel (PX-28)

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{{Infobox ship begin}} {{Infobox ship image |Ship image= |Ship caption= }} {{Infobox ship career |Hide header= |Ship country=Switzerland |Ship flag= 50px |Ship name=F.-A. Forel |Ship namesake=François-Alphonse Forel |Ship ordered= |Ship builder= Giovanola Frères SA |Ship laid down= |Ship launched=December 1978 |Ship sponsor= |Ship christened= |Ship completed= |Ship acquired= |Ship in service= |Ship out of service=2005 |Ship renamed= |Ship homeport= |Ship motto= |Ship nickname= |Ship fate= |Ship status=La Maison de la Rivière |Ship notes= }} {{Infobox ship characteristics |Hide header= |Header caption= |Ship type= Submersible |Ship displacement={{convert|11|t|abbr=on}} |Ship length={{convert|7.54|m|ft|abbr=on}} |Ship beam={{convert|2.12|m|ft|abbr=on}} |Ship height={{convert|2.30|m|ft|abbr=on}} |Ship draught= |Ship depth= |Ship hold depth= |Ship propulsion=electric motors, batteries |Ship speed={{convert|4|km/h|abbr=on}} |Ship range= |Ship test depth= |Ship crew=3 |Ship endurance= |Ship armament=None |Ship armor= |Ship notes= }}

The F.-A. Forel was a crewed underwater submersible built in 1978 by Jacques Piccard. Built at the Giovanola fabrication plant in Monthey and launched in Ouchy (Lausanne), it was one of the four submarines that have explored the depths of Lake Geneva, along with the Auguste Piccard and the two Mirs.

It is named after the Swiss Limnologist FA Forel.

The F.-A. Forel achieved a total of 3,600 dives with more than 6,000 passengers between 1979 and 2005. Many of them were done in Lake Geneva, although the submersible visited many other lakes such as Lake Neuchâtel, Lake Constance, Lake Zurich, Lake Lucerne, Lake Maggiore, Lake Bracciano and Lake Lugano. It also visited the Strait of Messina where it reached a depth of 560 metres. Although most of the missions were scientific, the submersible was also used for legal inquiries, industrial observations and tourism.

The ship is currently on display at La Maison de la Rivière in Tolochenaz.{{cite web |url=http://www.maisondelariviere.ch/index.php/en/la-maison-de-la-riviere/f-a-forel-submarine |title=Sous-marin F.-A. Forel |publisher=La Maison de la Rivière |website=www.maisondelariviere.ch |accessdate=2014-11-04 |archive-url=https://web.archive.org/web/20141104175519/http://www.maisondelariviere.ch/index.php/en/la-maison-de-la-riviere/f-a-forel-submarine |archive-date=2014-11-04 |url-status=dead }}

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