An incident involving the Arleigh Burke-class guided-missile destroyer USS Porter (DDG 78) in February now has new context. The dustup involved multiple Russian aircraft making close passes over the Porter that the United States Navy described as "unsafe and unprofessional" at the time. The aircraft involved were Su-24 Fencers and an Il-38 May.
According to a report from Reuters, the Russian defense ministry has declared that any United States Navy patrol in the Black Sea is a potential threat to Russia. The reason, they claim, is that they cannot tell what missiles are loaded aboard the U.S. ships.
The guided-missile destroyer USS Porter (DDG 78) stands watch in the Indian Ocean during a 2007 deployment. (US Navy photo)
How credible is this claim? To start, let's look at the Porter's weapons suite. It carries a single five-inch gun, it is equipped with two Phalanx Close-In Weapon Systems, two triple Mk 32 launchers for 324mm torpedoes, and two Mk 41 vertical launch systems (one with 29 cells, the other with 61).
It is this last system that warrants a closer look. The Mk 41 can carry RIM-66 Standard SM-2 surface-to-air missiles, RIM-174 Standard SM-6 surface-to-air missiles, RIM-162 Evolved Sea Sparrow Missiles, RUM-139 Vertical-Launched ASROCs, and BGM-109 Tomahawks. The Tomahawks are probably what the Russian defense ministry is citing as their excuse for the close encounter.
Flt I Burke class destroyer shoots a Harpoon missile. (Photo: U.S. Navy)
The Tomahawk comes in several varieties. Perhaps the most well-known are the TLAM-C and TLAM-D versions, largely because they have been the most used. According to Designation-Systems.net, the Block III version of the Tomahawk has a 750-pound high-explosive warhead and a range of 870 nautical miles.
The new Tactical Tomahawk, known as the BGM-109E, has a range of 900 nautical miles, according to the Center for Strategic and International Studies. In other words, from the Black Sea, Tomahawks could reach out and at a minimum, roll back Russian air defenses in time of war. There used to be a nuclear version of the Tomahawk, but according to a 2013 report by the Federation of American Scientists, the BGM-109A TLAM-N was retired after the 2010 Nuclear Posture Review.
So, really, a patrol by the United States Navy is not a threat to Russia, in and of itself. And the Navy's patrols in the Black Sea won't touch off a nuclear war – unless the Russians launch their nuclear-tipped anti-ship missiles first.