The Ohio-class submarine SSBN 728 USS Florida recently launched 2 Tomahawk
Cruise missiles from a ballistic missile tube during demonstration and
validation tests in the Gulf of Mexico off the coast of western Florida.
The successful launches provided confirmation that the conversion from SSBN to
SSGN of 4 Ohio-class submarines will work.
This at-sea testing demonstrates that all predictions, calculations and previous
estimations were correct.
The missile involved in this testing was an instrumented Tomahawk Block III
configured with an MK-106 rocket motor assembly to obtain a boosted energy
profile of a Tactical Tomahawk, the latest and most sophisticated Tomahawk
The second missile, launched two days later, was similar to the first one but
the missile was unarmed and the rocket motor was the MK-111 to obtain a normal
boosted energy profile of a Tomahawk Block III missile.
For both tests, the missile was placed within a Multiple All Up Round Canister
(MAC) in a configuration similar to the cluster of Tomahawk all up rounds
planned for SSGN Trident tubes. The testing also monitored the effect of the
launch on adjacent missile tubes.
Related to this testing, Northrop-Grumman was awarded a contract from the US
Navy with a potential value of $150 million to continue developing and
demonstrating the Multiple All-up round Canister (MAC), cornerstone of the SSGN
Each MAC, replacing one Trident missile tube, will be able to accommodate up to
seven All-up Round Tomahawk missiles, so each SSGN submarine replacing 22 of its
missile tubes could carry up to 154 precision-guided weapons. Currently a
Ticonderoga-class cruiser can accommodate 122 weapons, only a part of these
weapons are land attack missiles.
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