"The Rubis type is a class of first-generation nuclear attack submarines of the French Navy. They are the most compact nuclear attack submarines to date. All submarines of the class (except for Casabianca) are named after gemstones."@en . . . . . . "The Rubis type is a class of first-generation nuclear attack submarines of the French Navy. They are the most compact nuclear attack submarines to date. All submarines of the class (except for Casabianca) are named after gemstones."@en . "--02-23"^^ . . "Rubis-class submarine"@en . . . . . . "The Casabianca"@en . . "300"^^ . . . .