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Saunders-Roe A.36 Lerwick

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the drawing board" i. e. without requiring prototypes to be produced and flown first. Supermarine's commitment to the Spitfire meant that work was not expected to start for two years and so the Ministry looked to the other designs. Saunders-Roe had redesigned the S.36 in the meantime—replacing low hull and
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On one engine, the Lerwick could not maintain height, nor could it maintain a constant heading, as the controls could not counter the torque of one engine on maximum power. An engine failure would inevitably see the aircraft flying in slowly descending circles. On one occasion, the loss of an engine
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was a radical design that offered much better performance, by reducing the drag associated with a flying boat hull and so a prototype was ordered to test the concept. Of the other designs the Supermarine was the first choice with Saro and Shorts tied in second place. The Supermarine was ordered "off
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The first three aircraft were used as prototypes, with the first being launched on 31 October 1938, after numerous delays during design and construction. The Lerwick was immediately found to be unstable in the air, on the water and not suited to "hands off" flying. The latter was a major problem in
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FN.8 turret in the dorsal position and four in the Nash & Thompson FN4.A turret at the tail. Offensive weapons were a total of 2,000 pounds (910 kg) of bombs or depth charges – four 500-pound (230 kg) or eight 250-pound (110 kg) bombs, or four depth charges, carried in two
324:; the squadron soon began losing aircraft to accidents. During the service with 209 Squadron, all the Lerwicks were grounded twice for urgent safety modifications; on only two occasions were U-boats attacked by a Lerwick and neither submarine was damaged. 293:. By October, the squadron had stopped flying them and reverted to its older and slower Saro London flying boats. The Lerwick programme was cancelled on 24 October but restarted on 1 November. In December 1939, Air Vice-Marshal 269:. In service, several aircraft were lost because of wing floats breaking off, suggesting this was a structural weakness. Persistent problems with the hydraulics resulted in bomb doors sometimes dropping open during flight. 763:
Sank after an emergency touch–down in the Bristol Channel – an engine partially broke loose from its mountings and one of the propeller blades slashed the fuselage. The aircraft slowly sank: the crew were rescued by
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with a deep body and high wing—and the Supermarine order was transferred to the S.36. The contract was issued in June 1937 to buy 21 of the S.36, receiving the service name Lerwick (after the town of
331:. The last of a total of 21 Lerwicks was delivered in May but the type was withdrawn from front-line service in the same month. Most of the remaining Lerwicks were transferred to Number 4 (Coastal) 169:
R.1/36 (to meet Operational Requirement 32) was issued in March 1936 to several companies that had experience in building flying boats. The specification was for a medium-range flying boat for
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but it was a flawed design and only a small number were built. They had a poor service record and a high accident rate; of 21 aircraft, 10 were lost to accidents and one for an unknown reason.
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of all-metal construction, with a conventional flying boat hull, a planing bottom and two stabilising floats, carried under the wings on long struts. It was powered by two
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recommended that the Lerwicks be scrapped and Saunders-Roe put to building Short Sunderlands but the production change would have taken months and with the start of the
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but one engine failed to respond. A wingtip struck the water and the aircraft was spun around, opening a gash in the hull. The crew climbed out through the
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an aircraft designed for long-range patrols. Numerous adjustments, including the addition of a greatly enlarged single fin and an increase in the wing
294: 189:. The specification called for a cruise speed of 230 miles per hour (370 km/h) and a weight of no more than 25,000 pounds (11,000 kg). 520:
780 imp gal (937 US gal; 3,546 L) normal ; 1,440 imp gal (1,729 US gal; 6,546 L) overload
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14-cylinder air-cooled radial piston engines, 1,356 hp (1,011 kW) each at 2,750 rpm at 4,000 ft (1,219 m)
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Eleven of the 21 Lerwicks built were lost or written off during the three years the type saw operational service.
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Sank at its moorings during a gale; salvaged in December 1941. Struck off charge in 1942 as being beyond repair
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In mid-1942, the Lerwicks were briefly returned to service, for the purpose of operational training with
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3-bladed de Havilland Hydromatic, 13 ft 6 in (4.11 m) diameter constant-speed propellers
241: 1462: 895: 328: 390: 359: 89: 1452: 690:. A wing float broke off as it touched down, the aircraft rolled upside down and four crew died. 178: 1725: 1475: 170: 70: 1336:(The Aeroplane; & Flight Magazine Aviation Archive Series). London: Key Publishing, 2015. 1252: 1230: 1720: 1671: 1630: 400: 395: 355: 351: 237: 186: 1687: 1666: 859: 440: 434: 313: 290: 1407:
British Warplanes of World War II: Combat Aircraft of the RAf and Fleet Air Arm, 1939–1945
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Wing float broke off while taxiing after landing, rolled over and sank in Ardentrive Bay,
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1,540 mi (2,480 km, 1,340 nmi) at 200 mph (174 kn; 322 km/h)
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calibration flight the starboard engine failed. Unable to maintain height on one engine,
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Flying with No. 4 (C)OTU, it was written off after crashing during landing
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Bussy, Geoffrey, " 'Forgotten' Flying Boat: Saro's Unfortunate Lerwick",
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and swam toward shore as the aircraft sank, but were picked up by a boat
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duties to replace the Royal Air Force's biplane flying boats such as the
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Sank after an accident during take-off on Loch Ryan; two crew died.
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Sank, when it lost a wing float in a gale while moored on Loch Ryan
671:, sank after launching as a camera hatch was left open; written off 1172:. Royal Commission for Ancient and Historical Monuments in Scotland 1150:. Royal Commission for Ancient and Historical Monuments in Scotland 1128:. Royal Commission for Ancient and Historical Monuments in Scotland 810: 818: 705:; no casualties. The aircraft was recovered but was a total loss 702: 667:
Operating with the Marine Aircraft Experimental Establishment at
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Went missing while on patrol in good weather with a crew of 14
383: 304: 229: 174: 1428:,1982 (republished 1994 by Chancellor Press, reprinted 2002). 1363:
War Planes of the Second World War, Volume Five: Flying Boats
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Lost during an aborted landing, the pilot increased power to
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The Hamlyn Concise Guide to British Aircraft of World War II
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Aircraft for the Few: The RAF's Fighters and Bombers in 1940
1409:. Hoo, nr Rochester, Kent, UK: Aerospace Publishing, 1998. 687: 317: 278: 232:. For defence, the Lerwick was equipped with three powered 817:
hit telegraph wires before crashing into a hillside above
1394:. London: Putnam (Conway Maritime Press), London, 1988. 1148:"Saro Lerwick I, Ardantrive Bay, Kerrera, Firth of Lorn" 249:
streamlined nacelles behind the engines, similar to the
217:). The aircraft was a compact twin-engined, high-winged 1348:
British Secret Projects: Fighters and Bombers 1935–1950
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Operating with No. 4 (C)OTU, crashed into the sea near
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Production continued and the type entered service with
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forced a Lerwick to make an emergency landing in the
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1,272 hp (949 kW) at 2,800 rpm for takeoff
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Aircraft of comparable role, configuration, and era
327:In April 1941, 209 Squadron began receiving the US 1007: 1192:"P. O. Ronald John Fyfe and the Saro Lerwick S36" 1707: 772:after spending 24 hours in an inflatable dingy. 456: 443: : Three Lerwicks used for service trials. 1716:1930s British military reconnaissance aircraft 1497: 192:Designs were tendered by Saunders-Roe (S.36), 1483: 289:In mid-1939, four Lerwicks were allocated to 624:in a dorsal turret and four in a tail turret 147:(Saro). It was intended to be used with the 1306:. Shepperton, Surrey, UK: Ian Allan, 1979. 798:Sank after striking a rock during taxi-ing 1490: 1476: 425:Marine Aircraft Experimental Establishment 341:Marine Aircraft Experimental Establishment 236:. The nose turret had a single 0.303 inch 47:, ‘WQ-Q’ of 209 Squadron. Taking off from 1109: 576:166 mph (267 km/h, 144 kn) 570:214 mph (344 km/h, 186 kn) 464:Saunders Roe and Saro Aircraft since 1917 161: 630:2,000 lb (907 kg) of bombs or 303: 923:List of aircraft of the Royal Air Force 308:Lerwick in the markings of 209 squadron 281:at the end of a string of coal barges. 65:Maritime patrol/Anti-submarine aircraft 14: 1708: 484:63 ft 7.5 in (19.393 m) 284: 1471: 1392:Saunders and Saro Aircraft Since 1917 1274:"Life and Times of 422 Squadron RCAF" 1036:"Life and Times of 422 Squadron RCAF" 637: 265:and unsatisfactory rates of roll and 1741:Twin piston-engined tractor aircraft 1350:Midland Publishing. Hinckley. 2004. 928:List of flying boats and floatplanes 682:Made an emergency touch–down in the 490:80 ft 10 in (24.64 m) 1093:. AEROWARE/RCAF.com. Archived from 301:, aircraft were urgently required. 24: 496:20 ft 0 in (6.10 m) 25: 1752: 1441: 809:First Lerwick built. While on an 502:845 sq ft (78.5 m) 277:. The aircraft was then towed to 918:List of aircraft of World War II 875: 410: 376: 228:and initially had twin fins and 37: 1463:Lerwick on the site of the RCAF 1295: 1266: 1245: 1223: 1210: 1184: 1162: 1140: 1126:"Saro Lerwick I, Firth of Lorn" 1118: 1079: 1054: 1028: 514:33,200 lb (15,059 kg) 508:28,400 lb (12,882 kg) 1019: 998: 989: 980: 971: 962: 953: 944: 594:880 ft/min (4.5 m/s) 13: 1: 1453:The Lerwick on History of War 933: 588:14,000 ft (4,300 m) 457:Specifications (Saro Lerwick) 1736:Aircraft first flown in 1938 369: 7: 1380:. Sutton Publishers. 2003. 1334:Flying Boats of World War 2 1170:"Saro Lerwick I, Loch Ryan" 868: 847: 836: 825: 802: 791: 776: 756: 745: 734: 723: 709: 694: 675: 660: 655: 652: 10: 1757: 1448:British Aircraft Directory 1233:. Air Crash Sites Scotland 649: 619:.303 in (7.7 mm) 612:.303 in (7.7 mm) 240:; the other two had 0.303 167:Air Ministry Specification 1680: 1649: 1608: 1527: 1506: 1231:"SARO A.36 Lerwick L7248" 896:Consolidated PBY Catalina 617:gun in bow turret, two × 448:Operational Training Unit 333:Operational Training Unit 137:Saunders-Roe A.36 Lerwick 125: 117: 109: 104: 96: 81: 69: 61: 56: 36: 31: 938: 716:Sank at its moorings in 391:Royal Canadian Air Force 360:Royal Canadian Air Force 90:Royal Canadian Air Force 1458:British Aircraft of WW2 469:General characteristics 1304:Coastal Command at War 309: 162:Design and development 1329:. (pp. 148–151.) 1317:Bowyer, Michael J.F. 622:Browning machine guns 401:No. 423 Squadron RCAF 396:No. 422 Squadron RCAF 329:Consolidated Catalina 307: 242:Browning machine guns 187:Supermarine Stranraer 1378:British Flying Boats 1253:"Saro Lerwick L7257" 1115:London 1988, p. 189. 1076:London 2003, p. 186. 1060:London 2003, p. 174. 1025:London 2003, p. 183. 1016:London 2003, p. 185. 1004:Bowyer 1991, p. 149. 995:London 2003, p. 173. 977:London 2003, p. 172. 441:No. 240 Squadron RAF 435:No. 209 Squadron RAF 145:Saunders-Roe Limited 1575:A.22 Segrave Meteor 1426:Hamlyn (publishers) 1373:. (pp. 84–87.) 686:, 5 miles west of 646: 528:Bristol Hercules II 512:Max takeoff weight: 320:in 1940, replacing 285:Operational history 246:Nash & Thompson 57:General information 1731:High-wing aircraft 1681:Cancelled projects 1198:on 22 October 2012 901:Martin PBM Mariner 645: 638:Operational losses 310: 259:angle of incidence 251:Martin PBM Mariner 244:, two guns in the 198:Blackburn Aircraft 1703: 1702: 1499:Saunders-Roe/Saro 1405:March, Daniel J. 866: 865: 133: 132: 110:Introduction date 16:(Redirected from 1748: 1492: 1485: 1478: 1469: 1468: 1436:. (p. 181.) 1417:. (p. 191.) 1361:Green, William. 1290: 1289: 1287: 1285: 1280:on 23 April 2009 1276:. Archived from 1270: 1264: 1263: 1261: 1259: 1249: 1243: 1242: 1240: 1238: 1227: 1221: 1214: 1208: 1207: 1205: 1203: 1194:. Archived from 1188: 1182: 1181: 1179: 1177: 1166: 1160: 1159: 1157: 1155: 1144: 1138: 1137: 1135: 1133: 1122: 1116: 1113: 1107: 1106: 1104: 1102: 1097:on 28 March 2009 1083: 1077: 1074: 1061: 1058: 1052: 1051: 1049: 1047: 1042:on 23 April 2009 1038:. Archived from 1032: 1026: 1023: 1017: 1014: 1005: 1002: 996: 993: 987: 984: 978: 975: 969: 966: 960: 957: 951: 948: 885: 880: 879: 878: 812: 647: 644: 602: 586:Service ceiling: 563: 471: 446:No. 4 (Coastal) 416: 414: 413: 382: 380: 379: 322:Short Singapores 299:Second World War 275:Caledonian Canal 223:Bristol Hercules 149:Short Sunderland 41: 29: 28: 21: 1756: 1755: 1751: 1750: 1749: 1747: 1746: 1745: 1706: 1705: 1704: 1699: 1676: 1645: 1604: 1560:A.17 Cutty Sark 1523: 1502: 1496: 1444: 1439: 1420:Mondey, David. 1390:London, Peter. 1376:London, Peter. 1342:978 1909786 110 1332:Burney, Allan. 1314:. 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of climb: 589: 583: 577: 571: 568:Maximum speed: 557: 556: 549: 548: 547: 546: 545: 544: 543: 542: 532: 531: 521: 518:Fuel capacity: 515: 509: 503: 497: 491: 485: 479: 458: 455: 454: 453: 452: 451: 444: 438: 427: 421: 420: 418:United Kingdom 406: 405: 404: 403: 398: 387: 386: 371: 368: 295:Sholto Douglas 286: 283: 226:radial engines 206:Blackburn B.20 179:reconnaissance 171:anti-submarine 163: 160: 139:was a British 131: 130: 127: 123: 122: 119: 115: 114: 111: 107: 106: 102: 101: 98: 94: 93: 88: 83: 79: 78: 73: 67: 66: 63: 59: 58: 54: 53: 42: 34: 33: 9: 6: 4: 3: 2: 1753: 1742: 1739: 1737: 1734: 1732: 1729: 1727: 1726:Saro aircraft 1724: 1722: 1719: 1717: 1714: 1713: 1711: 1695: 1692: 1689: 1686: 1685: 1683: 1679: 1673: 1670: 1668: 1665: 1663: 1660: 1658: 1655: 1654: 1652: 1648: 1642: 1639: 1637: 1634: 1632: 1629: 1627: 1624: 1622: 1621:SR.36 Lerwick 1619: 1617: 1614: 1613: 1611: 1607: 1601: 1598: 1596: 1593: 1591: 1588: 1586: 1583: 1581: 1578: 1576: 1573: 1571: 1568: 1566: 1563: 1561: 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857: 853: 850: 846: 842: 840:L7265 (WQ-Q) 839: 835: 831: 829:L7257 (WQ-F) 828: 824: 820: 816: 808: 805: 801: 797: 794: 790: 786: 782: 779: 775: 771: 769: 762: 759: 755: 751: 749:L7263 (WQ-L) 748: 744: 740: 737: 733: 729: 727:L7255 (WQ-A) 726: 722: 719: 715: 712: 708: 704: 700: 697: 693: 689: 685: 684:Firth of Lorn 681: 679:L7253 (WQ-G) 678: 674: 670: 666: 663: 659: 648: 643: 633: 632:depth charges 629: 626: 623: 620: 616: 613: 609: 606: 605: 604: 601: 593: 590: 587: 584: 581: 578: 575: 574:Cruise speed: 572: 569: 566: 565: 564: 562: 554: 551: 550: 540: 539: 538: 537: 536: 535: 534: 533: 529: 525: 522: 519: 516: 513: 510: 507: 506:Gross weight: 504: 501: 498: 495: 492: 489: 486: 483: 480: 477: 474: 473: 472: 470: 465: 463: 449: 445: 442: 439: 436: 433: 432: 431: 428: 426: 423: 422: 419: 408: 407: 402: 399: 397: 394: 393: 392: 389: 388: 385: 374: 373: 367: 365: 361: 357: 353: 348: 346: 342: 338: 334: 330: 325: 323: 319: 315: 306: 302: 300: 296: 292: 282: 280: 276: 270: 268: 264: 260: 254: 252: 247: 243: 239: 238:Vickers K gun 235: 231: 227: 224: 220: 216: 212: 207: 203: 199: 195: 190: 188: 184: 180: 176: 175:convoy escort 172: 168: 159: 157: 154: 150: 146: 142: 138: 128: 124: 121:November 1938 120: 116: 112: 108: 103: 99: 95: 91: 87: 84: 82:Primary users 80: 77: 74: 72: 68: 64: 60: 55: 50: 46: 40: 35: 30: 27: 19: 1721:Flying boats 1620: 1535:A.3 Valkyrie 1421: 1406: 1391: 1377: 1362: 1347: 1333: 1318: 1303: 1296:Bibliography 1282:. 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Retrieved 1040:the original 1030: 1021: 1000: 991: 982: 973: 964: 955: 946: 911: 910: 889: 888: 837:21 Dec 1941 826:11 Nov 1941 814: 803:21 Oct 1941 792:16 Oct 1941 777:14 Oct 1941 767: 757:24 Mar 1941 746:22 Feb 1941 710:21 Nov 1940 695:29 Jun 1940 676:20 Feb 1940 641: 627: 607: 599: 597: 591: 585: 579: 573: 567: 560: 558: 552: 523: 517: 511: 505: 499: 493: 487: 481: 475: 468: 466: 461: 460: 356:423 Squadron 352:422 Squadron 349: 326: 314:209 Squadron 311: 291:240 Squadron 288: 271: 255: 200:(b. 20) and 196:(Type 314), 191: 165: 136: 134: 118:First flight 97:Number built 76:Saunders-Roe 71:Manufacturer 51:, March 1941 44: 32:A.36 Lerwick 26: 18:Saro Lerwick 1650:Helicopters 1600:A.37 Shrimp 1585:A.27 London 1346:Buttler, T 1284:20 February 1101:9 September 1046:20 February 848:6 Sep 1942 785:Tarbat Ness 770: (F22) 735:7 Jan 1941 724:6 Dec 1940 661:1 Sep 1939 561:Performance 553:Propellers: 524:Powerplant: 437:: 1939–1941 362:, based at 345:Helensburgh 337:Invergordon 234:gun turrets 194:Supermarine 183:Saro London 141:flying boat 1710:Categories 1657:Helicogyre 1590:A.29 Cloud 1565:A.19 Cloud 1545:A.7 Severn 1540:A.4 Medina 934:References 669:Felixstowe 500:Wing area: 364:Lough Erne 1609:SR-series 1519:Kittiwake 860:astrodome 856:go-around 766:HMS  718:Loch Ryan 653:Aircraft 615:Vickers K 488:Wingspan: 462:Data from 370:Operators 316:based at 219:monoplane 211:gull wing 143:built by 49:Loch Ryan 1528:A-series 1501:aircraft 1237:10 April 1202:10 April 1176:10 April 1154:10 April 1132:10 April 1091:RCAF.com 869:See also 600:Armament 43:Lerwick 1696:(P.192) 1690:(P.131) 1688:Duchess 1667:Skeeter 819:Faslane 703:Kerrera 494:Height: 482:Length: 358:of the 230:rudders 215:Lerwick 126:Retired 105:History 1672:XROE-1 1641:SR.177 1616:SR.A/1 1432:  1413:  1398:  1384:  1369:  1354:  1340:  1325:  1310:  1258:16 May 851:L7267 806:L7248 795:L7254 780:L7268 768:Jackal 760:L7252 738:L7262 713:L7251 698:L7261 664:L7249 628:Bombs: 580:Range: 450:: 1941 415:  384:Canada 381:  204:. The 202:Shorts 1694:Queen 1662:P.531 1636:SR.53 1626:SR.44 939:Notes 815:L7248 650:Date 608:Guns: 476:Crew: 263:stall 45:L7265 1595:A.33 1555:A.14 1550:A.10 1430:ISBN 1411:ISBN 1396:ISBN 1382:ISBN 1367:ISBN 1352:ISBN 1338:ISBN 1323:ISBN 1308:ISBN 1286:2009 1260:2012 1239:2013 1204:2013 1178:2013 1156:2013 1134:2013 1103:2009 1048:2009 811:MAEE 688:Oban 610:One 526:2 × 354:and 318:Oban 279:Oban 185:and 177:and 135:The 129:1942 113:1940 62:Type 1514:T.1 478:6-9 343:at 335:at 267:yaw 151:in 1712:: 1424:. 1089:. 1065:^ 1009:^ 347:. 253:. 173:, 100:21 1491:e 1484:t 1477:v 1402:. 1358:. 1288:. 1262:. 1241:. 1206:. 1180:. 1158:. 1136:. 1105:. 1050:. 20:)

Index

Saro Lerwick

Loch Ryan
Manufacturer
Saunders-Roe
Royal Air Force
Royal Canadian Air Force
flying boat
Saunders-Roe Limited
Short Sunderland
Royal Air Force
Coastal Command
Air Ministry Specification
anti-submarine
convoy escort
reconnaissance
Saro London
Supermarine Stranraer
Supermarine
Blackburn Aircraft
Shorts
Blackburn B.20
gull wing
Lerwick
monoplane
Bristol Hercules
radial engines
rudders
gun turrets
Vickers K gun

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