This is is just to highlight a question raised twice now on the thread below: We ( or rather, a Polish friend and I ) and the OP have done the hard bit of translating a very valuable detailed log from a Polish destroyer but I am sure the information requested is at a learned member's fingertips. Translation of Polish naval logs required Copy & paste: "One issue I have not been able to find out is how Convoy H.N.25 would have been set up. I know Convoy H.N.25 formed into 4 columns with steamers with FYLINGDALE (3918grt), GLEN TILT (871grt), BRIGHTON (5359grt) and LEO (1140grt) as column leaders. There were 39-42 ships in this convoy depending on which source you use. The passage of Convoy H.N.25 took 73 hours covering a distance of 515 nautical miles between Hovden Island Point, 85 nautical miles north of Bergen, and Methil on the Firth of Forth. The convoy's average speed was 7 knots per hour. What I can't find are details of the distance between the 4 columns and the distance between ships in those columns. This would give me an idea what sea area the convoy would have covered. I would welcome any advice from our more experienced members on what was the standard practice for merchant convoys of this type and size in April 1940. Thanks again for your assistance. John H." And thank you in advance from Shetland, Essex, and Poland.