No 1 air observer school mid term examination - D.R Plotting

MHudsonJD173116-151001-020005.jpg

Title

No 1 air observer school mid term examination - D.R Plotting

Description

Time allowed 2 hours. Five questions concerning air plotting on a simulated route over the English Channel.

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IBCC Digital Archive

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Format

One page printed document

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Identifier

MHudsonJD173116-151001-020005

Coverage

Transcription

[underlined] No.1 AIR OBSERVER NAVIGATION SCHOOL.
Mid-Term Examination. Course A.2.
D. R. PLOTTING.
No.3 Sheet – English Channel. Time: [/underlined] 2 hours, Thursday, p.m.

DEVIATION TABLE.
[table of magnetic deviation values]
[underlined] A.S. – 120 knots throughout. [/underlined]

(a). At Weymouth you receive orders to proceed to Alderney Lt. Ho.. Before leaving you find wind by three drifts as follows:-
1st Co. (T) 2700 Drift 150 S.
2nd Co. (T) 2100 Drift 120 P.
3rd Co. (T) 1400 Drift 180 P.
You S/C at 0910 hrs. over Portland Bill Lt. Ho. allowing for wind just found. What is W/V, Co. (M), and E.T.A.? Also give distance from Portland Bill Lt. Ho. to Alderney Lt. Ho.

(b). At 0934 hrs. Alderney Lt. Ho. bore 2010 (C) and at 0940 hrs. it bore 2880 (C). What is the actual wind experienced?

(c). At 1000 hrs. while steering 2700 (C) Casquets Lt. Ho. bore 0330 (C) dist. 3 miles. You receive orders to search for an enemy submarine and at 1000 hrs. you S/C 3430 (M), at 1008 hrs. you A/C 2630 (M), at 1015 you A/C 0270 (M). What is your Lat. and Long. at 1017 1/2 hrs.?

(d). At 1020 you obtain a fix by W/T Brgs. which puts you in [Lat and Long position]. From this posn. you proceed to Start Point Lt. Ho. allowing for wind experienced on flight to Alderney. What is Co. (M) and E.T.A?

(e). You P/P Start Lt. Ho. at 1046 1/2 hrs. and receive orders to intercept enemy cruiser which was reported in [Lat and Long position]. at 1025 hrs. steering 1450 (T) at 20 knots. You S/C over Start Pt. Lt. Ho. at 1055 hrs. What is Co. (M) to steer allowing for new wind just found, G.P.I., E.T.I., and ‘speed of approach’?

Citation

Great Britain. Royal Air Force, “No 1 air observer school mid term examination - D.R Plotting,” IBCC Digital Archive, accessed June 24, 2021, https://ibccdigitalarchive.lincoln.ac.uk/omeka/collections/document/10927.

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