Escort Group B6
Introduction '''Escort Group B6''' was a British convoy escort group of the Royal Navy which saw action during the Second World War, principally in the Battle of the Atlantic.
Formation Escort Group B6 was one of seven British escort groups which served with the Mid-Ocean Escort Force (MOEF), which provided convoy protection in the most dangerous midsection of the North Atlantic route. The MOEF was originally to be 5 American, 5 British and 4 Canadian groups. B6  was formed in the spring of 1942, following the inability of the US Navy to form groups A4 and A5 due to other commitments. To replace them two new escort groups, B6 and B7 were formed.
Service history Led by Modified long-range V-class destroyer , and under the leadership of Commander John Waterhouse, Group B6 included four Norwegian-manned s from Group A4;HNoMS ''Andenes'' (K01), HNoMS ''Eglantine'' (K197), HNoMS ''Potentilla'' (K214), and HNoMS ''Rose'' (K102). These were joined later by a fifth, HNoMS ''Montbretia'' (K208).In the summer of 1942 B6 escorted several uneventful convoys which arrived without loss. However, in August 1942 ON 122 was attacked by 9 U-boats of wolfpack ''Lohs''. four ships were sunk, while six U-boats were damaged, four seriously enough to return to base. Two of these returning submarines were attacked by aircraft in the Bay of Biscay; one was sunk, another so badly damaged it had to be withdrawn from service.In September B6 was joined by the F-class destroyer  as senior ship, whose commander Ralph Heathcote became Senior Officer of the Escort group (SOE). The following month SC 104 was attacked by Group ''Wotan''. In a five-day battle (12–17 October) SC 104 lost eight ships while two U-boats (''U-661'' and ''U-353'') were destroyed and two others damaged. During this action both ''Fame'' and ''Viscount'' were damaged and forced to withdraw, command falling to Lieutenant Commander Christian Monsen of ''Potentilla''.In November a depleted B6 group, still under Monsen, was escorting ON 144 which was attacked by 16 U-boats of Group ''Kreuzotter''. In a fierce battle, five ships of the convoy, and the corvette ''Montbretia'', were sunk. One U-boat was destroyed (''U-184'', sunk by ''Potentilla''). Monsen and the group were later commended for their aggressive defence, which was widely held to have averted a major disaster.In December HX 217 was attacked by seven U-boats of group ''Panzer''. B6, again led by ''Fame'', and with the three Norwegian ships was now joined by the Polish destroyer , and a British corvette. Another aggressive defence kept losses to a minimum, even when ''Panzer'' was joined by a second wolf pack, ''Draufgang''. Two ships were sunk in the three-day battle, while one U-boat was sunk by aircraft, and several others damaged. Another U-boat was lost, and one damaged, in a mid-ocean collision In January 1943 B6 was joined by the corvettes  and , bringing its strength up to seven warships. In February 1943 while escorting ON 165, the convoy was attacked by U-boats of Group ''Hardegen''. Two U-boats were destroyed – ''U-69'' sunk by ''Fame'' and ''U-201'' by ''Viscount'' – for the loss of two ships. In late February and early March HX 227 was intercepted by group ''Neptun'', but an aggressive defence and foul weather frustrated any co-ordinated attacks. Two stragglers were lost, while two U-boats were forced to return with damage.Following the major convoy battles of May 1943, which left B6 and their charges unscathed, the Battle of the Atlantic fell into a lull as the U-boat Arm withdrew from the battle. Several uneventful convoys followed, until the renewal of the offensive in the autumn of 1943.In this period B6 was involved in one convoy battle, while escorting ON 206.This convoy, and ONS 20, both became embroiled in the last major convoy action of the campaign, which saw six U-boats destroyed, for one ships lost. None of these were accounted to ships of B6 however.Following this action the North Atlantic route was again quiet, with B6 continuing escort duties, until in the spring of 1944 it was disbanded in a general re-organization prior to the invasion of Normandy. In its 23-month career B6 escorted 31 convoys, losing 19 ships, but seeing over 900 safely to harbour. The group lost one of its number, the corvette ''Montbretia'', but was credited with the destruction of five U-boats.
Tables ===Ships lost===*HNoMS ''Montbretia'' (K208), torpedoed and sunk 18 November 1942 by ===U-boats destroyed===*  rammed by ''Viscount'' on 15 October 1942 *  rammed by ''Fame'' on 16 October 1942 *  depth-charged by ''Potentilla'' on 20 November 1942 *  rammed by ''Viscount'' on 17 February 1943 *  depth-charged by ''Fame'' on 17 February 1943 ===Convoys escorted=== Homebound OutboundSC 83ON 101SC 88ON 111HX 200ON 122HX 205ON 132SC 104ON 144HX 217ON 155SC 116ON 165HX 227ONS 1SC 125ONS 6HX 251ONS 17HX 257ON 206SC 145ON 212SC 148ON 218SC 151ONS 29HX 281ON 229HX 286===Senior Officer Escort===FromToCaptainApril 1942September 1942Cdr. J WaterhouseSeptember 1942July 1943Cdr. R HeathcoteJuly 1943April 1944Cdr. R Currie
Notes
References *Clay Blair : ''Hitler's U-Boat War Vol II'' (1998). * ** Rohwer, J. and Hummelchen, G.: ''Chronology of the War'' at Sea 1939–1945 (1992) *Stephen Roskill : ''The War at Sea 1939–1945   Vol III, pt I'' (1960). ISBN (none)