The 40PB shows its speed in this photo and is armed with a .50cal M2 heavy machine gun at the bow, 7.62mm miniguns and acoustic devices amidships, and a M240B at the stern. The radar, electro-optical camera, and FLIR are visible on the short mast above the cabin. Metal Shark photo.
Naval News brings us a bit more informaton about the Navy’s new 40 foot force protection patrol boat. Most significantly,
NAVSEA: A total of 56 [40-foot Patrol] boats have been awarded to Metal Shark Boats and as of 9 May 2022, 20 boats have been delivered to the U.S. Navy.
In 2017 we discussed the program here and revisited it in 2019 here. The last indicated boats were being delivered at a rate of one every four weeks, meaning Metal Shark will likely be building these boats through early 2025.
Metal Shark calls this model the “40 Defiant” although it is actually 44 foot. Their description is here.
The 85-foot Defiant-class Near Coastal Patrol Vessel (NCPV) is being acquired by NAVSEA for Foreign Military Sales. Metal Shark photo.
There is also a some discussion of the Metal Shark “85 Defiant” patrol boat that is being produced for Foreign Military Sales. This is an evolution of the same design that gave the US Coast Guard its 87 foot “Marine Protector” WPBs (it too is actually 87 foot loa). The Navy calls this class Near Coastal Patrol Vessels or NCPV. We discussed this class in 2017. We noted at the time that Metal Shark had been award a contract,
“…potentially worth upwards of $54 million, Metal Shark will build up to thirteen 85-foot Defiant-class welded aluminum cutters for the Dominican Republic, El Salvador, Honduras, Costa Rica, Guatemala, and other United States partner nations. Additionally, Metal Shark will supply electro-optical infrared sensors, diagnostic equipment, in-country reactivation, crew familiarization, and test support to NCPV operators.
Metal Shark’s website has a description of the vessel here.
Chuck Hill's CG Blog 
Six of the 18 boats the Ukranians are being sent are reported to be 40 foot craft, so they may be this class. https://news.usni.org/2022/06/24/18-patrol-boats-sent-to-ukraine-set-for-river-duty-says-pentagon
While the Navy is getting rid of theMK VI patrol boats. Go figure!T
These are individually, a lot less expensive to maintain.
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You should get an option to translate from Ukrainian.
https://defence-ua.com/army_and_war/vmsu_natjaknuli_scho_vikoristovujut_pb40_defiant_proti_raptoriv_ta_kateriv_kamikadze_rf-10922.html?fbclid=IwAR3zQQUbnQHf90mUuGLvpCCRpLIWqxC8qInaLFaw8WOQEhS8k8myqOWscyY
Saw this on the Aug. 10 DOD contract list. Not the normal 40 foot patrol boat builder, Metal Shark.
RECONCRAFT LLC,* Anchorage, Alaska, is awarded a $17,995,948 firm-fixed-price modification to previously awarded contract N00024-23-C-2201 for five 40-foot Patrol Boats and 17 40-foot Patrol Boat trailers. Work will be performed in Clackamas, Oregon, and is expected to be completed by May 2026. Fiscal 2022 other procurement, Navy funds in the amount of $17,995,948 will be obligated at time of award and will not expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington, D.C., is the contracting activity.
Presumably a different boat. https://reconcraft.com/wp-content/uploads/2022/05/2020_Patrol-Boats-Specs.pdf
This from the DOD “Contracts For May 16, 2024”
Gravois Aluminum Boats LLC, doing business as Metal Shark,* Jeanerette, Louisiana (N00024-24-D-2275); and ReconCraft LLC,* Clackamas, Oregon (N00024-24-D-2276), are awarded a firm-fixed-price, indefinite delivery/indefinite-quantity, multiple award contract for the procurement of up to seventy-three 40 Foot Patrol Boats for the Naval Expeditionary Combat Command. The maximum cumulative dollar value for both contracts combined is $290,000,000 over a seven-year period. Metal Shark will be awarded a $6,507,040 initial order at contract award. ReconCraft will be awarded a $7,737,536 initial order at contract award. Work will be performed by Metal Shark in Jeanerette, Louisiana; and ReconCraft in Clackamas, Oregon, and the first orders are expected to be completed by December 2025. Fiscal 2023 other procurement (Navy) funds in the amount of $5,890,976 (91%); and fiscal 2024 other procurement (Navy) funds in the amount of $616,064 (9%), will be obligated at time of award to Metal Shark and will not expire at the end of the current fiscal year. Fiscal 2023 National Guard and Reserve Equipment Appropriations funds in the amount of $7,737,536 will be obligated at time of award to ReconCraft and will not expire at the end of the current fiscal year. This contract was competitively procured via the Procurement Integrated Enterprise Environment with four offers received. Naval Sea Systems Command, Washington Navy Yard, D.C., is the contracting activity (N00024-24-D-2275 & N00024-24-D-2276).