HMAS Geranium was an Arabis-class sloop built in Scotland and launched in 1915. The ship was operated by the Royal Navy as a minesweeper from 1915 until 1919, when she was transferred to the Royal Australian Navy (RAN) for use as a survey ship between 1919 and 1927. The ship was decommissioned in 1927 and scrapped during 1932, with the remains scuttled in 1935.
The C class was a group of twenty-eight light cruisers of the Royal Navy, and were built in a sequence of seven groups known as the Caroline class, the Calliope class, the Cambrian class, the Centaur class, the Caledon class, the Ceres class and the Carlisle class. They were built for the rough conditions of the North Sea, and proved to be rugged and capable vessels, despite being somewhat small and cramped.
The V and W class was an amalgam of six similar classes of destroyer built for the Royal Navy under the 9th, 10th, 13th and 14th of fourteen War Emergency Programmes during the First World War and generally treated as one class. For their time they were among the most powerful and advanced ships of their type in the world, and set the trend for future British designs.
The Hunt-class minesweeper was a class of minesweeping sloop built between 1916 and 1919 for the Royal Navy. They were built in two discrete groups, the earlier Belvoir group designed by the Ailsa Shipbuilding Company and the subsequent Aberdare group designed by the Admiralty. They were classed as Fleet Minesweeping Sloops, that is ships intended to clear open water. The Belvoir group were named after British fox hunts. Those of the Aberdare group were originally named after coastal towns, watering places and fishing ports, some of which happened to be hunts by coincidence. However, all were soon renamed after inland locations to prevent confusion caused by the misunderstanding of signals and orders.
The twenty-eight Anchusa-class sloops were built under the Emergency War Programme for the Royal Navy in World War I as the final part of the larger "Flower class", which were also referred to as the "Cabbage class", or "Herbaceous Borders".
HMS President is a retired Flower-class Q-ship that was launched in 1918. She was renamed HMS President in 1922 and moored permanently on the Thames as a Royal Navy Reserve drill ship. In 1982 she was sold to private owners and, having changed hands twice, served as a venue for conferences and functions as well as the offices for a number of media companies. She has been moved to Chatham on the Medway in Kent since 2016, but is due to return to the capital. She had the suffix "(1918)" added to her name in order to distinguish her from HMS President, the Royal Naval Reserve base in St Katharine Docks. She is one of the last three surviving Royal Navy warships of the First World War. She is also the sole representative of the first type of purpose built anti-submarine vessels, and is the ancestor of World War II convoy escort sloops, which evolved into modern anti-submarine frigates.
Lobnitz & Company was a Scottish shipbuilding company located at Renfrew on the River Clyde, west of the Renfrew Ferry crossing and east of the confluence with the River Cart. The Lobnitz family lived at Chapeltoun House in East Ayrshire. The company built dredgers, floating docks, fishing boats, tugs and workboats.
The Thornycroft type leader or Shakespeare class were a class of five destroyer leaders designed by John I. Thornycroft & Company and built by them at Woolston, Southampton for the Royal Navy towards the end of World War I. They were named after historical naval leaders. Only Shakespeare and Spenser were completed in time for wartime service. The other three were completed after the war, Broke and Keppel after being towed to Royal dockyards for completion, and two further ships - Saunders and Spragge - were cancelled. The function of a leader was to carry the flag staff of a destroyer flotilla, therefore they were enlarged to carry additional crew, offices and signalling equipment, allowing a fifth gun to be carried. These ships were very similar to the Admiralty type leader, but had Thornycroft design characteristics, the most noticeable being the broad, slab-sided funnels.
The Blyth Shipbuilding & Dry Docks Company Ltd. was a British shipyard located in Blyth, Northumberland, England.
The Flower class comprised five sub-classes of sloops built under the Emergency War Programme for the Royal Navy during World War I, all of which were named after various flowers. They were popularly known as the "herbaceous borders", in humorous reference to a well-known adage about the Royal Navy, as well as to a type of garden border popular in the United Kingdom.
The Arabis class was the third, and largest, of the five sub-classes of minesweeping sloops completed under the Emergency War Programme for the Royal Navy in World War I. They were part of the larger "Flower class" shipbuilding project, which were also referred to as the "Cabbage class", or "Herbaceous Borders". The ships were also used outside their minesweeping duties as patrol vessels, tugs, and personnel and cargo transports.
The Azalea class of twelve minesweeping sloops were built under the Emergency War Programme for the Royal Navy in World War I as part of the larger Flower class, which were also referred to as the Cabbage class, or "Herbaceous Borders". The third batch of twelve ships to be ordered in May 1915, they differed from the preceding Acacia class only in mounting a heavier armament. One ship, converted to a Q-ship was lost during the war, another during the Allied intervention in the Russian Civil War in 1919. With the exception of two others, the rest were scrapped. One entered mercantile service, while the other was transferred to the Belgian Navy. Both were captured by the Germans during World War II and put into German service. One was lost with the final ship being scrapped in 1952
The Acacia class was a class of twenty-four sloops that were ordered in January 1915 under the Emergency War Programme for the Royal Navy in World War I as part of the larger Flower class which were also referred to as the "Cabbage class", or "Herbaceous Borders". They were ordered in two batches, twelve ships on 1 January and another twelve on 12 January, and all were launched within about four or five months, and delivered between May and September 1915. They were used almost entirely for minesweeping until 1917, when they were transferred to escort duty.
The 24 class was a class of minesweeping sloops. They were derived from the preceding Flower-class sloop, but designed to appear double-ended. Twenty-four ships to this design were ordered between December 1916 and April 1917 under the Emergency War Programme for the Royal Navy in World War I, although two of them were cancelled before launch. All were named after famous racehorses, but they were not named Racehorse class as the Admiralty realised that this could easily be confused in communications with the Racecourse class of paddle minesweepers, and they officially became the 24 class.
HMS Snowdrop was an Azalea-class sloop of the Royal Navy. She served during the First World War. Snowdrop survived the war and was sold for scrap in 1923.
HMS Aubrietia (K96) was a Flower-class corvette built for the Royal Navy (RN) from 1941-1946. She was active as a convoy escort in the Atlantic and Mediterranean. In May 1941, Aubrietia sighted and depth charged the German submarine U-110, leading to its capture and the seizure of a German Naval Enigma and its Kurzsignale code book.
HMS Aubrietia was one of 12 Aubrietia-class sloops completed for the Royal Navy and was launched in 1916. During World War I, she functioned as a Q-Ship and served under the name Q.13, also taking the names Kai, Winton and Zebal. Aubrietia was part of the 1st Sloop flotilla, based in Queenstown and subsequently, the 3rd Sloop Flotilla in the North Sea.
HMS Gentian was an Arabis-class sloop that was sent to assist the Baltic States and their fight for independence. While clearing mines on July 15, 1919 HMS Myrtle and HMS Gentian also hit a mine and sank killing nine sailors in the two blasts.
HMS Myrtle was an Azalea-class sloop that was part of a Royal Navy squadron that was sent to assist the Baltic States and their fight for independence. While clearing naval mines on 16 July 1919 both Myrtle and HMS Gentian hit mines and sank killing nine sailors in the two blasts.
Royal Navy 
