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Thiarian Gunboats, Sloops and Minesweepers
1. Gunboats
1.1. Straeir-Class
Thiaria had no colonies (her politicians always made a point of telling everyone how morally superior that made them to the rest of the world), so her navy was not tasked with protecting or controlling colonies, which considerably limited the need for gunboat-type ships. The requirement for some muscle to protect Thiarian economic interests in underdeveloped countries was however recognized in the early 1890s, and in 1893 and 1894, four large gunboats primarily intended for 'diplomatic' missions in the most cynical sense of the word were ordered. They displaced 1.700 tons and carried four 140mm and six 65mm pieces, plus four 37mm revolvers, placing them among the most powerful of their kind. Their completion was delayed by the 1894 war against Brazil, and they commissioned in 1896 and 1897. Their names were Straeir (Ranger), Ambasadoir (Ambassador), Toscaire (Envoy) and Teachtaire (Messenger). They were single screw ships with long range and comfortable accomodation, but poor speed and maneuverability; in the classical gunboat role, they were not very useful due to their deep draught which prevented them from operating on most Chinese rivers and other shallow waters. All four were fitted as cadet training vessels, but usually only one of them at the same time performed that duty. All units of this class spent lengthy detachments on foreign stations; from 1900, Thiaria always maintained one gunboat in the Caribbean (usually based in Venezuela) and one on the China station (based in Macao under an agreement with Portugal dating to 1898). Three of four were sunk during the first world war: Teachtaire was intercepted by the cruiser HMS Amethyst on her way back from a visit to New York a few days after the war was declared; she was eventually sunk, but gave the Amethyst a fierce fight for her life. Ambasadoir was rather unceremoniously sunk by HM submarine D2 in August 1916, and Toscaire was stranded on a well charted rock while chasing an imaginary british submarine late in 1917. Straeir's engines were in a poor condition in 1916 and she was laid up in February; she was used as a stationary TS till 1919, then broken up.
1.2. Pionsoir-Class
After the defeat in the war of 1894, piracy and smuggling became worse around Thiaria, and the fight against this kind of crime assumed greater priority. In 1896, 1897 and 1898, the Thiarian navy ordered four 1000-ton gunboats every year. As they were intended for police duties only, they carried only light armament (five 65mm guns), but they had quarters for a 40-strong Marine detachment, a spacious prison and - most importantly - could carry two steam launches armed with 47mm guns for pursuit of pirates and smugglers to waters which were a little too littoral for the gunboats themselves. Speed and maneuverability were essential, so they had twin screws for 18 knots. All were commissioned prior to 1900. Their names were Pionsoir (Fencer), Dornalai (Boxer), Fiagai (Chaser), Garda (Guard), Gunnadoir (Gunner), Peas (Policeman), Marascal (Marshall), Sealgaire (Hunter), Rialtoir (Governor), Sirriam (Sheriff), Coimirceoir (Guardian) and Tarrthalai (Rescuer). They were instrumental in quelling the pirate scourge in the first decade of the 20th century; by 1915, their primary mission was all but accomplished. From 1910, the Thiarians deployed two of them to the China station; in 1916, it was Rialtoir's and Dornalai's turn. Rialtoir was sunk by HMAS Melbourne just outside Macao, while Dornalai made it to Corregidor and was interned. After the US entered the war, her crew was given leave by the Thiarian Admiralty to surrender her. She was scrapped in Japan in 1920.
The class was slated for replacement from 1916, but the first world war shifted priorities, and they had to soldier on as minelayers. Their size, speed (after a major overhaul, their machinery was still good for 16 knots in 1916) and maneuverability made them well suited to the task, and when 1916 was over, all ten had been converted. They were so successful that Thiaria did not need to build any purpose-designed minelayers. Corai caught the Brazilian submarine F5 surfaced in March 1918 and sunk it with gunfire; Garda was wrecked 1917 on a mining mission off the Brazilian coast, and Marascal was torpedoed by HMS E17. After the war, the survivors were completely worn out and were broken up in 1921 through 1924.
2. Sloops
2.1. Ursan-Class
A few weeks after the war had begun, British D-, G- and J-class long range submarines started to operate around Thiaria and prey on Thiarian shipping, at first with near impunity. There were no provisions for effective ASW warfare, and the Thiarians were lucky that the British could only spare a dozen submarines at the same time to harass them. A convoy system was proposed, but at first not implemented because almost no escorts were available; the fleet command jealously kept all active destroyers for itself, and did not start to fit them with ASW gear prior to mid-1917. To close this obvious capability gap, the 1916 supplementary estimates provided funds for a crash-development programme of a dedicated ASW escort vessel with secondary mine warfare capability similar to the British Flower-class sloops. As the ships were supposed to be oceangoing and reasonably fast (turbine propulsion and 20 knots were specified), the Thiarians designed them big; at 1.100 tons, the hulls were approximately the same size as a contemporary F-class destroyer, but shorter and beamier and with only 40% of a destroyer's designed hp. They were comfortable and good seaboats, but due to their very small rudder, they were not really maneuverable enough to be effective escorts, having the same tactical diameter as a Neamhspleachas-class pre-dreadnought battleship. Few WW1-era Thiarian ships featured serious design flaws, but this certainly was one. They carried four 100mm guns in a lozenge arrangement and were fitted with DC racks and Hydrophones from the beginning. Two 65mm AA guns and four 8mm AAMGs were retrofitted to all completed units before the first one was commissioned. The 1917 and 1918 estimates provided for 12 units each; the first four were laid down before funding was authorized in November and December 1916, which clearly shows how direly they were needed. Like the torpedo gunboats of 25 years before, which served as the Thiarian Navy's principal minelayers during the first world war, these ships were named for predatory animals: Ursan (Bear), Cadhoit (Coyote), Tiogar (Tiger), Sionnach (Fox), Broc (Badger), Mactire (Wolf), Nathair (Snake), Siota (Cheetah), Fiachat (Wildcat), Faolchu (Jackal), Leon (Lion), Hieana (Hyenah), Gairial (Gharial), Dobharchu (Otter), Grisun (Grison), Lincse (Lynx), Pantar (Panther), Firead (Ferrett), Mangus (Mongoose), Caiman (Caiman), Minc (Mink), Easog (Stoat), Neas (Weasel), and Fosa (Fossa Cat).
All were laid down before they were officially authorized, the last two in February 1918, and they averaged a building time of 12 months. When the war ended, 16 were complete and 12 in commission. Ursan and Broc fell prey to British submarines (G4 and G2, respectively) in 1918, the others survived the war. Since the Thiarians were slow to develop a sound ASW doctrine and training regime, they were not very efficient; none of them ever sunk an enemy submarine. But their presence alone was a considerable deterrent, and Thiarian merchant shipping losses dropped sharply in the final year of the war, for which these vessels have to be at least partly credited. With allied escorts abounding, there was no interest in them as reparations, and all 14 completed units remained in Thiaria. Two further ones were completed postwar; Fosa, Neas, Easog, Caiman, Mangus and Minc were dismantled on stocks. When the Thiarian coast guard was established in 1922, twelve of these ships were transferred to the new service (minus their lateral 100mm guns, their 65mm flaks and their ASW gear) and formed the nucleus of its fleet. The other four (Sionnach, Nathair, Leon and Lincse) were completely disarmed during the 1920s and used as tenders and later as accomodation ships till the end of the second world war. Although they were sturdy ships, their engines were in poor shape (12 knots top speed in 1939), so they were not reacivated. The Coast Guard ships, which were thoroughly refurbished in the early 1930s and still good for 18 knots in 1939, were rearmed in 1940 and pressed into escort service, although they remained under Coast Guard command. They were mostly used in low-threat areas, so ten of them survived the war and continued to serve with the Thiarian coast Guard till they literally fell apart in the late 1950s.
2.2. Caithne-Class
While the Ursan-Class was designed to wait for the submarines to come to them and then pound them, be it surfaced or submerged, the simultaneously acquired 750-ton Caithne-Class adhered to the other common ASW tactic employed in the first world war, the offensive ASW patrol by warships disguised as coasters (Q-Ships), which carried only guns (two 140mm monsters in front and aft of the bridge and a 65mm flak aft), but no depth charges. They not only looked like merchants - some 30 genuine ones of similar size were requisitioned in 1916 and converted to makeshift Q-ships - but also had cargo berths to double as supply ships or troop transports. Twelve were authorized in 1917 and twelve more in 1918. They were very similar to the later French Amiens-class, but neither was based upon the other; there simply were not many different ways to design such purpose-built Q-ships. Unlike the Ursan-Class, which were built by naval yards and large private shipbuilders rather quickly, the Caithnes were contracted to small private yards which had to operate with very limited manpower, so building time varied wildly from nine to seventeen months. They were named for trees: Caithne (Arbutus tree), Peine (Pine), Dair (Oak), Mailp (Maple), Cuileann (Holly tree), Fearn (Alder Tree), Beith (Birch) Ceadar (Cedar), Mahagaine (Mahogany), Conbhaiscne (Dogwood Tree), Eabann (Ebony), Crannrubar (Hevea/Rubber tree), Acaicia (Acacia), Faibhile (Beech), Hicearai (Hickory), Poibleog (Poplar), Cufrog (Cypress), Giuis (Fir), Siorghlas (Thuja), Learog (Larch), Sprus (Spruce), Iur (Yew), Pailm (Palm tree), and Beallai (Laburnum tree). Although the first units of the class entered service as late as May 1918 and the last twelve not at all, they accounted for two enemy submarines between them (HMS D3 and the Brazilian F1), both by gunfire. Acacia was lost on action to a Brazilian mine, while Beith, Dair and Conbhaiscne were sunk by British submarines (G4, J6 and E19, respectively). After the war, all but four were broken up within five years, as the concept of the Q-ship had become obsolete. The four survivors (Mailp, Cuileann, Mahagaine and Eabann) were used as minesweeper tenders throughout the second world war and broken up soon afterwards.
3. Minesweepers
3.1. Seabhac-Class
Unlike ASW, for which the Thiarians showed little aptitude, they were well versed in mine warfare since the Brazilian war of 1907/8; even before they entered the first world war in 1916, they had already converted 16 old destroyers and torpedo boats to minesweepers and employed four old torpedo gunboats as minelayers. Within days after the declaration of war, some 90 civilian trawlers were earmarked for activation as auxiliary minesweepers, complete with their crews, and ten large patrol gunboats were converted to minelayers. In July 1916, 24 purpose-built minesweepers were ordered. They were trawler-type ships with minimal armament (only a single 65mm gun to explode mines after their wires were cut), but very good seakeeping abilities. They were named for birds: Seabhac (Hawk), Iolar (Eagle), Ulchabhan (Eagle Owl), Meirliun (Merlin), Croman (Harrier), Bultur (Vulture), Cur (Kite), Screachog (Owl), Pocaire (Kestrel), Fabhcun (Peregrine Falcon), Clamhan (Buzzard), Condar (Condor), Preachan (Crow), Meirleach (Skua), Spiorog (Sparrowhawk) and Naoscach (Snipe). All were begun in August - October 1916 and completed within six months. During the war, they were mostly used in Thiarian home waters and around New Portugal. Meirliun, Pocaire, Meirleach and Naoscach were lost, all to mine detonations while doing their job.
As neither the British nor the Brazilians were very active with mines, half the class were refitted to patrol ships with two additional 65mm guns aft; of the 90 requisitioned civilian trawlers, only 20 received sweeping gear, and the other 70 were used as patrol caft only. After the war, they were considered redundant and sold to civilian interests to be used as fishing trawlers.
3.2. Coirneach-Class
The Thiarians had realized the requirement for large fleet minesweepers since the war of 1908, but due to the absolute priority of the battlefleet, no funding was made available in peacetime. The 1916 emergency programme had provided the Thiarian fleet with a large number of auxiliary minesweepers, which were however deemed too small, too slow, too uncomfortable for prolonged operations and not sufficiently armed. Moreover, due to the relative inactivity of Thiaria's British and Brazilian enemies on the mine warfare sector, the initial fear that numbers might not suffice had evaporated early in 1917. At this time, a smaller number of larger, more versatile ships was considered more useful, and a design for a large oceangoing minesweeper which could double as a fleet tug if necessary was adopted in May 1917. Construction commenced in September, and the first unit was commissioned in June 1918. Like all purpose-built Thiarian minesweepers, they were named after birds: Coirneach (Osprey), Peileacan (Pelican), Frigead (Frigatebird), Canog (Puffin), Piasun (Pheasant), Broigheall (Cormorant), Cruidin (Kingfisher), Guardal (Petrel), Gainead (Gannet), Faoilean (Gull), Piongain (Penguin), Fulmaire (Fulmar), Fainleog (Swallow), Colur (Pigeon), Corr (Heron), Gealbhan (Sparrow), Lasairean (Flamingo), Faracha (Guillemot), Eala (Swan), Saidbhear (Kittiwake), Tucan (Toucan), Ibis (Ibis), Pearaid (Parrot) and Eamu (Emu). When the war was over, the first batch of 12 was completed, and the others followed at a leisurely pace in 1920 through 1922. 16 boats remained in service with the navy and formed the core of its minesweeping force between the wars; all saw active service in the second world war, where five were lost.
Eight (Peileacan, Piasun, Broigheall, Guardal, Piongain, Corr, Gealbhan and Eamu) were refitted to oceangoing salvage tugs without armament or sweeping gear and handed over to the new Thiarian Coast Guard in 1923. A few of them served in this capacity till the late 1950s.
This post wraps Thiaria's WW-I-era fleet; all purpose-built combatants are now included.
Next, I'll post a few other ships I thought up for a slightly alternate (and considerably more bloody) course of the naval war in WWI, like French and US battlecruisers and light cruisers, Brazilian, Dutch and Spanish superdreadnoughts, and a few Greek and Ottoman ships.
Greetings
GD