at Arelape and Comagena) and the Classis Lauriacensis (based at Lauriacum) in Pannonia I, the Classis Stradensis et Germensis, based at Margo in Moesia I, and the Classis Ratianensis, in Dacia ripensis. The naval units were complemented by port garrisons and marine units, drawn from the army. In the Danube frontier these were: In Pannonia I and Noricum ripensis, naval detachments (milites liburnarii) of the legio XIV Gemina and the legio X Gemina at Carnuntum and Arrabonae, and of the legio II Italica at Ioviacum. In Pannonia II, the I Flavia Augusta (at Sirmium) and the II Flavia are listed under their prefects. In Moesia II, two units of sailors (milites nauclarii) at Appiaria and Altinum. In Scythia Minor, marines (muscularii) of legio II Herculia at Inplateypegiis and sailors (nauclarii) at Flaviana. Fleets in Western Europe In the West, and in particular in Gaul, several fluvial fleets had been established. These came under the command of the magister peditum of the West, and were: The Classis Anderetianorum, based at Parisii (Paris) and operating in the Seine and Oise rivers. The Classis Ararica, based at Caballodunum (Chalon-sur-Saône) and operating in the Saône River. A Classis barcariorum, composed of small vessels, at Eburodunum (modern Yverdon-les-Bains) at Lake Neuchâtel. The Classis Comensis at Lake Como. The old praetorian fleets, the Classis Misenatis and the Classis Ravennatis are still listed, albeit with no distinction indicating any higher importance than the other fleets. The "praetorian" surname is still attested until the early 4th century, but absent from Vegetius or the Notitia. The Classis fluminis Rhodani, based at Arelate and operating in the Rhône River. It was complemented with a marine detachment (milites muscularii) based at Marseilles. The Classis Sambrica, based at Locus Quartensis (unknown location) and operating in the Somme River and the Channel. It came under the command of the dux Beligae Secundae. The Classis Venetum, based at Aquileia and operating in the northern Adriatic Sea. This fleet may have been established to ensure communications with the imperial capitals in the Po Valley (Ravenna and Milan) and with Dalmatia. It is notable that, with the exception of the praetorian fleets (whose retention in the list does not necessarily signify an active status), the old fleets of the Principate are missing. The Classis Britannica vanishes under that name after the mid-3rd century; its remnants were later subsumed in the Saxon Shore system. By the time