Source:
            
            http://www.bbc.co.uk/ww2peopleswar/stories/27/a4292327.shtml
            
            This story has been collected 
            and transcribed by Mark Jeffers with permission from the author.
            
            
            No mention of the Speedwell, a particularly happy and fortunate 
            ship, would be complete without reference to an extra member of the 
            crew. Jack was a mongrel, part Labrador; he joined the ship at 
            Christmas 1939, having being picked up as a stray in a pub in Hull 
            or Grimsby. Once onboard he settled down for good until his demob in 
            1945. He never missed a trip and never overstayed his leave. It was 
            almost unthinkable that the ship should sail without him.
            Jack belonged to the ship and not 
            to any particular individual. Our Tanky and Postman, Able Seaman 
            Kesby, saw to his welfare onboard and took him ashore when he went 
            to collect mail. He also went ashore with the signalman to collect 
            signals from the local naval offices, wherever the ship was based.
            Since Kesby and the signalman, R.W. Hickling, were great walkers to 
            some distant pubs they always took Jack with them.
            Jack was never sick or sorry and 
            in the six years never needed the services of a vet. He was not a 
            glutton and with careful feeding and plenty of exercise kept his 
            figure.
            He was never sea sick despite the 
            violence of Speedwell’s motion. In harbour he slept in the central 
            store with Tanky, but the store was battened down at sea and he then 
            slept with the seamen in the forecastle or, if the weather was bad, 
            he moved to the Wireless Office where the ship’s movement was felt 
            least. He would also retire to the Wireless Office when the ship was 
            in action, since the noise of the guns was less due to the 
            soundproofing. He was however a most useful look out and would give 
            warning of approaching enemy aircraft, which was most valuable, 
            particularly in low cloud conditions. His more acute sense of 
            hearing gave him this advantage and he didn’t like what he heard 
            since it probably meant gunfire, so he growled and barked, looked 
            towards the directions of the aircraft, then made full speed for the 
            Wireless Office.
            Jack could climb up and down any 
            ladder in the ship. It took him quite a time to master the one from 
            the wheelhouse to the bridge, as this was almost vertical, but he 
            eventually made it. If he was in real difficulty he would tug at the 
            nearest person’s trouser leg as much as to say “Help me up mate”.
            He was always first in the motor 
            boat when it was going ashore and never failed to know where to pick 
            it up when waiting ashore to return onboard. He usually went on 
            leave with Kesby or Hickling or his Stoker friends and settled down 
            wherever he went, as if he had known no other home. He travelled all 
            over England and Scotland by train and never had a ticket. He would 
            leave whoever he was with outside the ticket barrier, dash onto the 
            platform and then quietly wait until his master of the moment came 
            through, then joined him to board the train. The manoeuvre would 
            then be repeated in reverse on arrival at the destination. No matter 
            how big the crowd he never got flustered, nervous or lost. On the 
            train he would lie on the floor of the carriage and disappear under 
            the seat at the Inspector’s cry of “Tickets please” remaining hidden 
            until given the all clear.
            He was an uncommonly intelligent 
            animal and was in general on the side of the ratings other than the 
            officers. If a little gambling was in progress in a messdeck Jack 
            would be posted to give warning of the approach of the Officer of 
            the Day and the night rounds. When Jack heard the boatswains pipe, 
            which precedes the rounds, he would bark furiously and by the time 
            the Officer of the Day reached the messdeck he probably found a 
            harmless game of whist in progress. 
            When the ship was based in North 
            Russia Tanky made Jack a set of soft leather boots so that the 
            frozen snow and ice did not affect his paws. In the cold climate his 
            coat grew very long and it was very amusing to see this shaggy dog, 
            complete with boots, cavorting with half-wild Russian husky dogs on 
            the quayside at Polyarnoe, near Murmansk. He would also accompany us 
            on the ski slopes where he would slide at great speed on the hard 
            packed snow. 
            Jack was a very clean dog and 
            would always manage to get to the upper deck for his toilet, however 
            bad the weather, but he always had an escort when it was really 
            rough and the deck was washing down.
            He was a fine dog and much more 
            than a mascot. He was the symbol of the luck that was Speedwell’s 
            and was, I am sure, the longest serving dog at sea in the wartime 
            Navy, just as Speedwell was one of the few ships, possibly the only 
            one, to be at sea for the duration of the war without paying off her 
            ship’s company at any time, and to have a good proportion of her 
            crew who served with her for the whole period of that six year 
            commission.
            At the end of his service Jack was 
            demobbed to a village near Aberdeen, with a friend of one of the 
            crew, where he had spent an occasional leave, and went to see no 
            more. He was truly a seadog of the highest order and we all loved 
            him.