El Kabong:
Israel has three ‘Dolphin’ class submarines, built by Germany, and capable of launching nuclear cruise missiles. I didn’t mean to say the subs themselves were nuclear - they aren’t. I meant they carry nuclear missiles. I did say ‘ballistic’ missile, and that’s not correct. They’re cruise missiles.
From GlobalSecurity.org:
In May 2000, Israel is reported to have secretly carried out its first test launches from two German-built Dolphin-class submarines of cruise missiles capable of carrying nuclear warheads. The missiles launched from vessels off Sri Lanka in the Indian Ocean are said to have hit a target at a range of about 1,500 kilometers [about 930 statute miles]. Israel is reported to possess a 200kg nuclear warhead, containing 6kg of plutonium, that could be mounted on cruise missiles.
From the Federation of American Scientists:
Three 1,925 ton Type 800 Dolphin class submarines have been built in German shipyards for the Israel Navy. Modern submarines with the most advanced sailing and combat systems in the world, they combine extensive sophistication with very easy operation. The purpose of these submarines is to enable the Israel Navy to meet all the tasks faced in the Mediterranean Sea in the 21st century. The submarines cost $320 million each, and are twice as big as the aging Gal-class submarines that the Israeli navy has relied on to date.
It is generally agreed that these submarines are outfitted with six 533-millimeter torpedo tubes suitable for the 21-inch torpedoes that are normally used on most submarines, including those of the United States. Some reports suggest that the submarines have a total of ten torpedo tubes – six 533-millimeter and four 650-millimeter. Uniquely, the Soviet navy deployed the Type 65 heavy-weight torpedo using a 650-millimeter tube. The four larger 25.5 inch diameter torpedo tubes could be used to launch a long-range nuclear-capable submarine-launched cruise missile (SLCM). According to some reports the submarines may be capable of carrying nuclear-armed Popeye Turbo cruise missiles, with a goal of deterring an enemy from trying to take out its nuclear weapons with a surprise attack. Under a system of rotation, two of the vessels would remain at sea: one in the Red Sea and Persian Gulf, the other in the Mediterranean. A third would remain on standby.