The ceremony marking the start of construction at a German shipyard of four Sa’ar 6-corvettes, for securing Israel’s offshore oil and gas rigs, was attended Wednesday by Israel’s Navy commander, Vice Admiral Eli Sharvit. The ships will be armed with ship-to-ship missiles, missile interceptors and Iron Dome systems adapted for marine use. Sections of their hulls will be invisible to radar. The first corvette will be delivered to the Israeli Navy in a year’s time. The cost of the transaction was half a million euros.