Action against nuclear vessels in Hammamet, 35 kilometres off the Tunisian coast. The Sirius came upon five Soviet nuclear warships - a reflection of the USSR's lack of naval bases in the sea - along with a nuclear-armed US frigate, which was apparently keeping a watching eye on the Soviet flotilla. Volunteers promptly went into action against both navies, and succeeded in painting the international radiation symbol on the Soviet aircraft carrier Baku and on the US frigate Thomas C. Hart, despite being buzzed by a Soviet launch and sprayed by American fire hoses.