{"product_id":"patrol-vessels-of-the-united-kingdom-von-undefined","title":"Patrol vessels of the United Kingdom","description":"\u003cp\u003eSource: Wikipedia. Pages: 34. Chapters: Active patrol vessels of the United Kingdom, Archer class patrol vessels, Bird class patrol vessel, Corvettes of the United Kingdom, Dark class fast patrol boats, Frigates of the United Kingdom, Gay class fast patrol boats, Patrol vessels of the Royal Navy, Peacock class patrol vessels, Scimitar class patrol vessels, World War II patrol vessels of the United Kingdom, World War I patrol vessels of the United Kingdom, Harbour Defence Motor Launch, HM Armed Smack Inverlyon, HMS Endurance, MV Western Lady III, HMS Mimi and HMS Toutou, HMS Biter, HMS Loch Insh, HMS Loch Fyne, List of patrol vessels of the Royal Navy, Westmorland, Insect class gunboat, Hunt class mine countermeasures vessel, HMS Charger, HMS Raider, HMS Sabre, HMS Tracker, Attacker class patrol boat, MTB 102, HMS Example, LÉ Ciara, HMS Tiger Bay, HMS Archer, River class patrol vessel, Dance class armed trawler, Island class patrol vessel, Tree class trawler, USCGC Itasca, HMS Blazer, Shakespearian class trawler, Brave class fast patrol boat, HMS Exploit, HMS Smiter, Castle class patrol vessel, LÉ Orla, HMS Orkney, HMS Leeds Castle, HMS Jersey, HMS Gay Archer, HMS Ranger, Venus class frigate, HMS Dumbarton Castle, Portuguese class naval trawler, HMS Dasher, HMS Scimitar, HMS Trumpeter, HMT Gulland, HMS Express, HMS Pursuer, HMS Puncher, HMS Explorer, Ford class seaward defence boat, HMS Gay Bombardier, Omani corvette Qahir Al Amwaj, HMS Loch Glendhu, HMS Maeander, HMS Kingfisher, HMT Macbeth, HMS Severn. Excerpt: The Harbour Defence Motor Launch (HDML) was a British small motor vessel of the Second World War. The HDML was designed by W J Holt at the Admiralty in early 1939. During World War II 486 HDMLs were constructed, mainly by yacht builders, in the United Kingdom and a number of other allied countries. In view of their later expanded combat roles in some Commonwealth navies some HDMLs were re-designated as Seaward Defence Motor Launches (SDML) or Seaward Defence Boats (SDB). HDMLs had a round bilge heavy displacement hull 72 feet (22 m) long with a beam of 16 feet (4.9 m) and a loaded draught of 5 feet (1.5 m). Loaded displacement was 54 tons. The hull had a pronounced flare forward to throw the bow wave clear and provided considerable lift to prevent all but the heaviest seas from coming aboard. Although seaworthy, the boat had a considerable tendency to roll, especially when taking seas at anything other than directly ahead or astern. The cause was the round bilge midship section and a considerable reserve of stability, the effect of which was to impart a powerful righting moment if the boat was pushed over in a seaway. This, coupled with the round bilged hull and lack of bilge keels, would set up a rapid and violent rolling. One of the design criteria was that the boat had to be capable of turning inside the turning circle of a submerged submarine. To achieve this, HDMLs were fitted with two very large rudders and, to reduce resistance (to turning), the keel ended 13 feet before the stern. A side effect of this was that the boat lacked directional stability and was extremely difficult to hold on a straight course. The hull was of round bilge wooden construction, planked with two diagonally opposed skins with a layer of oiled calico between them ¿ known as a ¿double-diagonal¿ technique. The hull was completed with frames or ¿timbers¿ riveted perpendicularly from the keel to the gunwale on the inside of the planking, forming a very...\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9781156788189\"\u003e\u003ch3\u003eActive patrol vessels of the United Kingdom, Archer class patrol vessels, Bird class patrol vessel, Corvettes of the United Kingdom, Dark class fast patrol boats, Frigates of the United Kingdom, Gay class fast patrol boats\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9781156788189","offer_id":48851548897605,"sku":"9781156788189","price":15.15,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/efe9b00d-930a-4533-9772-6e66026fc576.jpg?v=1726374502","url":"https:\/\/shop.autorenwelt.de\/products\/patrol-vessels-of-the-united-kingdom-von-undefined","provider":"Autorenwelt Shop","version":"1.0","type":"link"}