The Flotilla had eight modern submarines ("Archimede", "Galileo Ferraris", "Galileo Galilei", "Evangelista Torricelli", "Luigi Galvani", "Guglielmotti", Macallé and "Perla"). The flotilla was based at Massawa in Eritrea on the Red Sea. The port linked Axis-occupied Europe and the naval facilities in the Italian concession zone at Tientsin in China. There were limited port facilities at Assab, in Eritrea and at Mogadishu in Italian Somaliland. When the Mediterranean route was closed to Allied merchant ships in April 1940, the Italian naval bases in East Africa were well placed for attacks on convoys en route to Suez up the east coast of Africa and through the Red Sea. The finite resources in Italian East Africa were intended to last for a war of about six months' duration, the submarines denying the Red Sea route to the British.