The Japanese destroyer was one of 21 s built for the

Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, Potsdam Declaration, when it was dissolved followin ...

(IJN) in the late 1910s. In 1940, she was converted to Patrol Boat No. 38. The ship was torpedoed in the Bashi Strait by on November 25, 1944, and stricken from the

navy list A Navy Directory, Navy List or Naval Register is an official list of naval officers, their ranks and seniority, the ships which they command or to which they are appointed, etc., that is published by the government or naval authorities of a co ...

on March 10, 1945.

Design and description

The ''Momi'' class was designed with higher speed and better

seakeeping Seakeeping ability or seaworthiness is a measure of how well-suited a watercraft is to conditions when underway. A ship or boat which has good seakeeping ability is said to be very seaworthy and is able to operate effectively even in high sea stat ...

than the preceding second-class destroyers. The ships had an

overall length The overall length (OAL) of an ammunition cartridge is a measurement from the base of the brass shell casing to the tip of the bullet, seated into the brass casing. Cartridge overall length, or "COL", is important to safe functioning of reloads i ...

of and were

between perpendiculars Length between perpendiculars (often abbreviated as p/p, p.p., pp, LPP, LBP or Length BPP) is the length of a ship along the summer load line from the forward surface of the stem, or main bow perpendicular member, to the after surface of the ster ...

. They had a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Radio beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially lo ...

of , and a mean

draft Draft, the draft, or draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a v ...

of . The ''Momi''-class ships displaced at standard load and at

deep load The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weig ...

.Jentschura, Jung & Mickel, p. 137 ''Yomogi'' was powered by two

Zoelly Heinrich Zoelly (1862–1937) was a Mexican-Swiss engineer. He developed steam turbines and turbine-driven locomotives and patented the geothermal heat pump in 1912. Life and work Heinrich Zoelly was the fifth child of Franz Xaver Zoelly. His f ...

geared

steam turbine A steam turbine or steam turbine engine is a machine or heat engine that extracts thermal energy from pressurized steam and uses it to do mechanical work utilising a rotating output shaft. Its modern manifestation was invented by Sir Charles Par ...

s, each driving one

propeller shaft A drive shaft, driveshaft, driving shaft, tailshaft (Australian English), propeller shaft (prop shaft), or Cardan shaft (after Girolamo Cardano) is a component for transmitting mechanical power, torque, and rotation, usually used to connect o ...

using steam provided by three

Kampon The was the externally operating division of the Ministry of the Navy of Japan responsible for the administration of naval vessel construction. From 1923 onward, it took on the role of a research institution for the research and development of n ...

water-tube boiler A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by fire. Fuel is burned inside the furnace, creating hot gas which boils water in the steam-generat ...

s. The turbines were designed to produce to give the ships a speed of . The ships carried a maximum of of

fuel oil Fuel oil is any of various fractions obtained from the distillation of petroleum (crude oil). Such oils include distillates (the lighter fractions) and residues (the heavier fractions). Fuel oils include heavy fuel oil (bunker fuel), marine f ...

which gave them a range of at . Their crew consisted of 110 officers and crewmen.Watts & Gordon, p. 260 The main armament of the ''Momi''-class ships consisted of three Type 3 guns in single mounts; one gun forward of the

well deck In traditional nautical use, well decks were decks lower than decks fore and aft, usually at the main deck level, so that breaks appear in the main deck profile, as opposed to a flush deck profile. The term goes back to the days of sail. Late-2 ...

, one between the two

funnel A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its constructi ...

s, and the last gun atop the aft

superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ...

. The guns were numbered '1' to '3' from front to rear. The ships carried two above-water twin sets of

torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...

s; one mount was in the well deck between the forward superstructure and the bow gun and the other between the aft funnel and aft superstructure. In 1940, ''Yomogi'' was converted into a patrol boat. Her torpedo tubes, minesweeping gear, and aft 12 cm gun were removed in exchange for two triple mounts for

license-built Licensed production is the production under license of technology developed elsewhere. The licensee provides the licensor of a specific product with legal production rights, technical information, process technology, and any other proprietary compo ...

Type 96 light

AA gun Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface ( submarine-launched), and air-bas ...

s and 60

depth charge A depth charge is an anti-submarine warfare (ASW) weapon designed to destroy submarine A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited ...

s. In addition one boiler was removed, which reduced her speed to from . These changes made her top heavy and

ballast Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within ...

had to be added which increased her displacement to .Hackett, Kingsepp & Cundall

Construction and career

''Yomogi'', built at the Ishikawajima

shipyard A shipyard, also called a dockyard or boatyard, is a place where ships are shipbuilding, built and repaired. These can be yachts, military vessels, cruise liners or other cargo or passenger ships. Compared to shipyards, which are sometimes m ...

Tokyo Tokyo, officially the Tokyo Metropolis, is the capital of Japan, capital and List of cities in Japan, most populous city in Japan. With a population of over 14 million in the city proper in 2023, it is List of largest cities, one of the most ...

, 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 ...

on 26 February 1921, launched on 14 March 1922, and completed on 19 August 1922. In 1940, she was converted into

patrol boat A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval ship, naval vessel generally designed for Coastal defence and fortification, coastal defence, Border control, border security, or law ...

and she was renamed ''Patrol Boat No. 38'' (第三十八号哨戒艇, Dai-38-Gō shōkaitei) on 1 April 1940: She was

torpedoe A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such ...

d in the

Bashi Channel The Bashi Channel () is a waterway between Mavulis Island of the Batanes Islands, Philippines and Orchid Island of Taiwan. It is a part of the Luzon Strait, with the Pacific Ocean to the east, and is between the East China Sea and the South Chin ...

by the

United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...

submarine A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or infor ...

on 25 November 1944 and was struck from the

on 10 March 1945.

Notes

References

* * * * {{DEFAULTSORT:Yomogi (1922) 1922 ships Ships built by IHI Corporation Momi-class destroyers Destroyers sunk by aircraft Ships sunk by US aircraft Maritime incidents in July 1944 World War II shipwrecks in the Pacific Ocean