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Thread: Another navigational question

  1. #1
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    Default Another navigational question

    Hi all,

    I would like to ask for help with deciphering following record:

    00.26: B2 bears 163 Rel.= 286

    It is from navigational log and I suppose it is:

    time: ?? and then real course or magnetic course + some correction?

    Any idea much appreciated

    TIA

    Pavel
    Czechoslovak Airmen in the RAF 1940-1945
    http://cz-raf.webnode.cz

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    Rel. may be in reference to the term "relative bearing" however I am having difficulty making sense out of it.

    Eric

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    Hi Eric, many thanks for your opinion. Ok when I will be back home I will post the whole paragraph but to me it make no sense at all.

    Pavel
    Czechoslovak Airmen in the RAF 1940-1945
    http://cz-raf.webnode.cz

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    Actually, here's one shot at it.

    At time 00:26, object ( fix or aircraft? ) "relative" bearing is 163 degrees to the navigator's aircraft.

    Based on the navigator's aircraft currrent magentic heading, the ( fix or aircraft ) "magnetic" bearing is calculated to be 286 degrees.

    Eric

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    B2 could be the airfield at Bazenville, between Bayeux and Caen in France. It is therefore possible that the aircraft in question was somewhere over the English Channel?

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    I think Eric has it right about "relative bearing".

    Can I ask the date of the quote? Your early question was for a 1941 operation, the airfield B2 came along in the last half of 1944.

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    Hi Pavel,
    Might I enquire as to the source of the navigational log and unit? My father was with TTC Comm Flight which was part of 2nd TAF Comm Sqd and he flew into many of these airfields with references such as B6 (Bayeux), B48 (Amiens) etc in September 1944.
    Regards,
    Rob Jerram.

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    Hi chaps,

    thanks for your comments.
    Unfortunately I have not the log nor the squadron. This is from letter with some comments to Meritorious Flight mentioned in BC Navigational Bulletin published in July 1941 so the flight must be in summer 1941.
    All I know it was a Whitley from 4 Group.

    BR

    Pavel
    Czechoslovak Airmen in the RAF 1940-1945
    http://cz-raf.webnode.cz

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    Pavel,

    A Relative Bearing is the angle between an aircraft's True Heading and the True Bearing (direction) to the object in question. Let's take an aircraft flying a TH of 045° away from an object bearing 195°, the Relative Bearing would be 150°.

    Ragnar

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    Hi Ragnar,

    thanks for explanation. Anyway here is the origial paragrpah:

    There are numerous petty mistakes. E. G. : The navigator adds to his bearings of B2 the magnetic instead of the true course to get the bearing of B2. He writes: 00.23: B2 bears 161 Rel. = 284, instead of 275 – 00.26: B2 bears 163 Rel.= 286, but at 00.29 suddenly uses the true course: B2 bears 170 Rel.=284.

    Pavel
    Czechoslovak Airmen in the RAF 1940-1945
    http://cz-raf.webnode.cz

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