Lachlan Donald Ian Mackinnon

Lachlan Donald Ian Mackinnon, CB, CVO (12 February 1882 - 10 November 1948) was a Royal Navy officer, especially noted for his role as a convoy commodore during the Second World War.

Family and early career

His father was a clergyman and Lachlan entered the Royal Navy in 1898. He received the China Medal for service in the Boxer Rebellion and was seconded to the navy of the Ottoman Empire from 1910 to 1912. Mackinnon was married in 1912 and had one son and two daughters.

During the First World War, Mackinnon served aboard the battlecruiser, HMS "Indomitable", and the battleship, HMS "Barham". He was present for the bombardment of the Dardanelles forts in 1914 and was present at the battles of Dogger Bank and Jutland, where he was gunnery officer of the "Indomitable".

During the interwar period he held a number of shore and seagoing appointments including as commanding officer of HMS "Queen Elizabeth" and HMS "Warspite".

After commanding the Second Battle Squadron with his flag aboard HMS "Royal Oak", he retired as a vice admiral on 11 January 1939.

Return to service

From 16 September 1939 he joined the Royal Navy Reserve as a Captain and served as a convoy commodore until 1941.He was one of the first commodores to put to sea. He completed 11 ocean convoys before he was sent to take charge of Convoy SC-7.

Convoy SC-7 was out of Sydney, Nova Scotia. This slow convoy of 35 ships sailed on 5 October 1940 bound for the United Kingdom with a very inadequate escort. For most of their journey, SC-7 had only one escort, the sloop, HMS "Scarborough". And "Scarborough" was not fitted with asdic. Mackinnon was aboard the SS "Assyrian", built in Hamburg in 1914. She carried a cargo of grain. Mackinnon brought with him his team of five sailors, a Yeoman of Signals, two telegraphists and two young bunting tossers ( ie, sailors in charge of hoisting signal flags). The signals crew were important as the convoys maintained radio silence to avoid detection by the German navy.

On the afternoon of 16 October the convoy was met by two Royal Navy ships, the sloop, HMS "Fowey", and the corvette, HMS "Bluebell". That night all three escorts went off in various direction pursuing reports of submarines or rescuing survivors of the two ships hit early the next morning. The convoy was left defenceless in the face of the gathering six submarines which included the ace Otto Kretschmer in "U-99". The convoy took heavy losses.

On 19 October, as the convoy approached the British Isles, Mackinnon spotted a U-boat 100 yards ahead and went full ahead to ram her. The "Assyrian", for the first time in recent memory, made 10 knots, chasing the enemy ship for 40 minutes, but unable to bring any of her small guns to bear. But, slowly the U-boat drew away. Now ahead of the convoy, with no escorts around, the old ship was vulnerable. Two torpedoes missed her but a third caught her on the starboard side stopping the engines and putting out her lights. Both ship's boats were damaged in the explosion and most of the surviving crew took to the life-rafts. A sinking merchantman drifted down upon the "Assyrian", her pit props rolling off and further damaging the ship and sinking one of the life-rafts which had been launched. A small group including the ship's Master, the Chief Officer and Mackinnon were stranded aboard the sinking ship. They set to building a raft out of whatever they could find and launched it as the ship went down. The raft fell to bits as it hit the water. Mackinnon, then 58, went into the cold North Atlantic. He swam to a plank and hung on. The sloop HMS "Leith" found him at the very end of his strength, unable to swim or grasp a rope. They hoisted him aboard in a net.

Mackinnon developed pneumonia and barely survived. Though he recovered somewhat and tried to get back to sea, he was put on the retired list. His health was permanently impaired and he died in 1948 at age of 65.

It was only the second convoy to be attacked by the new wolf pack tactics of German submarines. Some 20 of the 35 ships were sunk, including the commodore's ship. There is no sense that the disaster was in any way due to Mackinnon's efforts.

Character and reputation

Alan Burn in the "Fighting Commodores" describes Mackinnon as playing hard and working hard, and "... though a disciplinarian was popular at all levels."

References

*"The Fighting Commodores", Burn, Alan. Naval Institute Press, Annapolis, Maryland, USA, 1999. pp 76-90
* www.unithistories.com select "officers", then "British" then "Royal Navy "


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