ORP ''Grom'' was the

lead ship The lead ship, name ship, or class leader is the first of a series or class of ships all constructed according to the same general design. The term is applicable to naval ships and large civilian vessels. Large ships are very complex and may ...

of her class of

destroyer In naval terminology, a destroyer is a fast, manoeuvrable, long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against powerful short range attackers. They were originally developed in ...

s serving in the Polish Navy during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. She was named after the

Polish Polish may refer to: * Anything from or related to Poland, a country in Europe * Polish language * Poles, people from Poland or of Polish descent * Polish chicken *Polish brothers (Mark Polish and Michael Polish, born 1970), American twin screenwr ...

word for

Thunderbolt A thunderbolt or lightning bolt is a symbolic representation of lightning when accompanied by a loud thunderclap. In Indo-European mythology, the thunderbolt was identified with the 'Sky Father'; this association is also found in later Hell ...

, while her

sister ship A sister ship is a ship of the same class or of virtually identical design to another ship. Such vessels share a nearly identical hull and superstructure layout, similar size, and roughly comparable features and equipment. They often share a ...

translates to

lightning Lightning is a naturally occurring electrostatic discharge during which two electric charge, electrically charged regions, both in the atmosphere or with one on the land, ground, temporarily neutralize themselves, causing the instantaneous ...

Design

''Grom'' was thought of as a large destroyer, similar to

flotilla leader A flotilla leader was a warship of late 19th century and early 20th century navies suitable for commanding a flotilla of destroyers or other small warships, typically a small cruiser or a large destroyer (known as a destroyer leader). The flotil ...

s. She and sister ship ORP ''Błyskawica'' were to support the outdated French-built and in the role of the core of the Polish Navy in a possible conflict. As Poland had only one major seaport, the main task of the Polish naval forces was to secure supplies shipment to and from allied countries. Because of that, the ''Grom'' class was designed to fulfill both the role of shore defence and convoy escort and was supposed to be stronger than single enemy destroyers. Two Parsons

steam turbine A steam turbine is a machine that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884. Fabrication of a modern steam turbin ...

s of altogether, three

boiler A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, central h ...

s and two shafts allowed ''Grom'' to travel at , faster than the contemporary designs like the US and es, the British , or the

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

s. Also, as it was not clear whether the ships would be used to secure convoys to the Polish port of

Gdynia Gdynia ( ; ; german: Gdingen (currently), (1939–1945); csb, Gdiniô, , , ) is a city in northern Poland and a seaport on the Baltic Sea coast. With a population of 243,918, it is the List of cities in Poland, 12th-largest city in Poland and ...

or the Romanian port of Constanţa (through the

Romanian Bridgehead __NOTOC__ The Romanian Bridgehead ( pl, Przedmoście rumuńskie; ro, Capul de pod român) was an area in southeastern Poland that is now located in Ukraine. During the invasion of Poland in 1939 at the start of the Second World War), the Polish ...

), the possible range was much larger than in the case of destroyers designed exclusively for the

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from ...

. The ship had an effective range of at .

Construction and career

''Grom'' was ordered from the British

J. Samuel White J. Samuel White was a British shipbuilding firm based in Cowes, taking its name from John Samuel White (1838–1915). It came to prominence during the Victorian era. During the 20th century it built destroyers and other naval craft for both the ...

shipyard in

Cowes Cowes () is an English seaport town and civil parish on the Isle of Wight. Cowes is located on the west bank of the estuary of the River Medina, facing the smaller town of East Cowes on the east bank. The two towns are linked by the Cowes Floa ...

and was

laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one o ...

in 1935. The destroyer was commissioned in 1937. The commanders of the ship were: * Lieutenant Commander Stanisław Hryniewiecki - January 25, 1937 - June 20, 1938 * Commander Aleksander Hulewicz - March 13 or. June 20, 1938 - May 4, 1940 On 30 August 1939, the Polish destroyers , , and ''Grom'' were ordered to activate the

Peking Plan The Peking Plan"Peking" was one contemporary spelling for the city now spelled 'Beijing' in English. In modern Polish the name is written as "Pekin". Some modern Polish works refer to the "Pekin Plan". The original orders used the spelling "P ...

, and the warships headed for Great Britain, from where they were to operate as convoy escorts. On 1 September 1939, Polish destroyers met with the British destroyers and . The British ships led the Polish flotilla to

Leith Leith (; gd, Lìte) is a port area in the north of the city of Edinburgh, Scotland, founded at the mouth of the Water of Leith. In 2021, it was ranked by '' Time Out'' as one of the top five neighbourhoods to live in the world. The earliest ...

, and in the night the Polish destroyers came to

Rosyth Rosyth ( gd, Ros Fhìobh, "headland of Fife") is a town on the Firth of Forth, south of the centre of Dunfermline. According to the census of 2011, the town has a population of 13,440. The new town was founded as a Garden city-style suburb ...

. During her operations in the Norwegian Campaign, ''Grom'' was ranked by the German soldiers as probably the most hated of all the Allied ships deployed to the area. This hatred was founded on the fact that ''Grom'' took an intense interest in all hostile movements on shore and was reputed to spend hours lurking the coast in order to harass German forces. On 4 May 1940, ''Grom'' carried out what turned out to be the last of her many

naval gunfire support Naval gunfire support (NGFS) (also known as shore bombardment) is the use of naval artillery to provide fire support for amphibious assault and other troops operating within their range. NGFS is one of a number of disciplines encompassed by th ...

missions in the

Narvik ( se, Áhkanjárga) is the third-largest municipality in Nordland county, Norway, by population. The administrative centre of the municipality is the town of Narvik. Some of the notable villages in the municipality include Ankenesstranda, Ball ...

area in the Rombaken fjord. She was attacked by a

Heinkel He 111 The Heinkel He 111 is a German airliner and bomber designed by Siegfried and Walter Günter at Heinkel Flugzeugwerke in 1934. Through development, it was described as a "wolf in sheep's clothing". Due to restrictions placed on Germany after th ...

bomber from

Kampfgeschwader 100 ''Kampfgeschwader'' 100 (KG 100) was a ''Luftwaffe'' medium and heavy bomber wing of World War II and the first military aviation unit to use a precision-guided munition (the Fritz X anti-ship glide bomb) in combat to sink a warship (the Itali ...

(piloted by Lt. Korthals). ''Grom'' was hit by two bombs and sank after internal explosion. The wreck was never raised and it was not until 6 October 1986 that it was explored by divers for the first time.

References

{{DEFAULTSORT:Grom Grom-class destroyers World War II destroyers of Poland World War II shipwrecks in the Norwegian Sea 1936 ships Maritime incidents in May 1940 Destroyers sunk by aircraft Ships built on the Isle of Wight Ships sunk by German aircraft 1986 archaeological discoveries