ORP Grom is an Orkan-class fast attack craft.

It is the sister ship of Orkan and Piorun.

The ship was the result of a construction project undertaken by the German Democratic Republic for its navy, named Project 660 ("Sassnitz class" in NATO code[3]).

After the unification of Germany the unfinished hulls were bought by the Polish Navy from VEB Peenewerft shipyard in Wolgast and completed in Northern Shipyard in Gdańsk.

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