Riverines attached to Riverine Squadron 2 in a SURC at Haditha Dam Forward Operating Base conduct a patrol in Haditha, Iraq, December 20, 2007. Members of RIVRON 2 patrol Haditha’s dam and surrounding waterways, denying their use by insurgents, which in turn provides security to local fisherman. Location: Haditha Dam FOB, Anbar Province Iraq. (United States Navy, MC2 Kirk Worley) The package includes two of these.

The Drive/The War Zone has the best expanation I have seen so far as to the 18 boats that are to be transferred to Ukraine as part of the latest aid package.

A Sea Ark Dauntless patrol boat operating in San Diego. The type has been a very common sight at locales where U.S. Navy ships operate from for years now. U.S. Navy photo by Mass Communication Specialist 1st Class Michael Moriatis/Released. Ten of these 34 foot boat are included in the aid package. 

While the 35 and 34 foot boats have been identified as to type, the six 40 foot boat have not. The post speculates that these may be of a type exported under Foreign Military Sales in 2020. I think, it is not unlikely these may be the new Navy 40 foot force protection patrol boats. They are an improvement on the 34 foot Sea Ark boats. They can be armored. They have an electro-optic system on the mast. They would be particularly useful if they had the remote weapon system on the bow they were designed to carry.