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Official Records
This document is a modern transcription of Admiralty file ADM 239/261, "The Fighting Instructions," published 1939. This particular portion deals with pages 29-34. The original document is held at the The National Archives at Kew, London. This Crown Copyrighted material is reproduced here by kind permission of The National Archives. |
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Pages 29-34 CONTENTS
140. The following instructions apply in particular to reconnaissance, but ships employed on search or patrol should also use them as a guide. Reconnaissance is carried out in order to discover whether any enemy ships are at sea in a given area ; search to obtain full information about enemy forces initially located by reconnaissance. Reconnaissance may be said to end and search begin as soon as the first enemy report is made by a ship or aircraft. In certain circumstances, patrol will be an aid to or will replace reconnaissance, and may result in large enemy forces being brought to action by the main fleet. The instructions for search and patrol by surface craft are given in O.U. 5415/36. BY DAY AT NIGHT 143. Aircraft are not normally suitable for night reconnaissance, though they may be of considerable value in supplementing surface reconnaissance, especially in bright moonlight and particularly when the position and composition of enemy forces is approximately known. They will always have difficulty in identifying ships at night. TYPES OF AIRCRAFT AVAILABLE FOR
RECONNAISSANCE 145. Catapult aircraft. The difficulties of operating catapult aircraft render them unsuitable for reconnaissance unless the sea is so calm that they can be recovered without difficulty. They should not be used for this duty if an aircraft carrier is in company with the force at sea. 146. Shore-based aircraft. Naval reconnaissance duties may also be undertaken by shore-based aircraft, but it mut be remembered that the personnel of squadrons detailed for this duty may be inexperienced in working with naval forces and in recognising ships. Care should be taken that, when practicable, information is furnished to General Reconnaissance Squadrons regarding the types of friendly ships in the area of reconnaissance, and the means of identification in use between ships and aircraft. ECONOMY IN THE USE OF AIRCRAFT 148. Air reconnaissance will be established by the Senior Officer, aircraft carriers, in accordance with the Admiral's directions. He will also decide whether flying is possible and whether to recall aircraft if the weather deteriorates. He should inform the Admiral of any alterations made to the original duties assigned to aircraft. 149. The principle duty of reconnaissance aircraft is to locate and report the enemy main force and aircraft carriers, subsequently keeping them under observation, whilst endeavouring to remain unseen. All other enemy forces sighted should be reported. The decision whether reconnaissance aircraft should carry bombs will be at the discretion of the Senior Officer, aircraft carriers, subject to the requirements of the Admiral. 150. Detailed instructions for reconnaissance aircraft are contained in current Fleet Air Arm publications. Before the start of a reconnaissance, aircraft will normally be given information to cover the following points:-
151. In the absence of particular instructions, aircraft must be prepared to act without hesitation on their own initiative. As a general rule, action should be taken as follows:-
152. In the absence of specific instructions, the Commanding Officer of a ship employed on reconnaissance must have the following points clearly in his mind before contact occurs:-
153. Use of D/F. Ships employed on reconnaissance duties should make full use of their D/F equipment. 154. The variety of circumstances in which a submarine may find herself on reconnaissance duty and the likelihood of communication difficulties make it necessary that a wide discretion should be given to Commanding Officers. As a general rule, submarines should endeavour to report enemy vessels sighted without their presence becoming known. In some cases immediate reports may be of greater importance than their security. In the absence of specific instructions, discretion must be used in the risks incurred in making reports. 155. Maintenance of touch. In many circumstances it may be more important to follow and endeavour to keep touch with an enemy unit sighted than to maintain the patrol position ordered. 156. Attacks. Important enemy units should always be attacked, unless definite orders to the contrary have been issued. Submarine patrol orderd should normally contain definite instructions regarding attack on light craft. Submarines sighting enemy vessels at night should simultaneously fire torpedoes and make an enemy report, they should then dive. 157. If possible, ships to be employed on a night search should be organised some considerable time before dark. Instructions for ordering a night search are contained in the Signal Manual, Chapter XVIII, "Search and Patrol by Surface Craft" (O.U.5415/36), and in the Destroyer Fighting Instructions. The attacking force tables, the use of which is described in Part III of the Destroyer Fighting Instructions, will usually be the most convenient method of ordering a night search when time is short. 158. It is important that all ships to be employed on a night search are in company with the Senior Officer of the search before dark, and that a reference position is issued before ships start to spread. Whenever possible, the search should be so arranged that all searching units know that any vessel sighted is an enemy. 159. When searching for enemy forces at night, it is not enough to locate and report units of the enemy's night screen only. The Admiral will require information of all enemy units encountered, but more especially of the enemy's main force and aircraft carriers. 160. The primary object of any ship or aircraft employed on reconnaissance is to give the Admiral information about the enemy ; the first report of contact with the enemy must be made without delay. Ill-considered or inaccurate reports may have serious and adverse effects on the operations of other forces, and must be avoided. Therefore, reconnaissance units should normally make an "alarm report" on first sighting, and a full report after subsequent careful observation. (See Signal Manual, Chapter XVII). It is important for reconnaissance units to remain unseen until they have observed the course of the enemy, as it is probable that the latter will alter course as soon as he realises he has been sighted. 161. (Blank) 162. (Blank) 163. (Blank) 164. (Blank) 165. (Blank) 166. (Blank) 167. (Blank) 168. (Blank) 169. (Blank) Click here to return to the Table of Contents for 'The Fighting Instructions' Click here to return
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