From: Brooklyn, NY
Depending on the type of tomahawk it may not be able to navigate to the precision required for end-game engagement over water. Many versions of the Tomahawk use TERCOM navigation which relies on ground contours for navigation--which is not too handy over water. Being off by a few hundred metres is okay when crossing shore to start TERCOM navigation, but renders the weapon useless against an actual target at sea.
There is a new-ish weapon in the DB, the "BGM-109J Tomahawk Blk Va MST [Maritime Strike] -- 2023, Land-Launched, ASuW Capable" which as the name implies is launched from land and is capable against ships. It has a variety of seekers, including IR, ESM and active radar to help it distinguish its target against the ocean.
These other Tomahawks are also capable against surface targets in the DB:
RGM-109B Tomahawk TASM -- 1985-1991, ASM
UGM-109B Tomahawk TASM -- 1985-1991, VLS
UGM-109B Tomahawk TASM -- 1985-1991, TT
RGM-109I Tomahawk Blk IV MMT [Multi-Mission] -- 2015, ASuW Capable
UGM-109I Tomahawk Blk IV MMT [Multi-Mission] -- 2015, TT, ASuW Capable
UGM-109I Tomahawk Blk IV MMT [Multi-Mission] -- 2015, VLS, ASuW Capable
The point about GPS guided weapons is a good one and we'll look into whether the existing parameters should be changed to allow e.g. GPS guided bombs to hit stationary offshore platforms/rigs.
Are there any other guidance types that should be capable against offshore platforms that aren't?