|
1.
The type 291 was in the metric band and the Japanese were known
to be fitted with search receivers that could pick it up.
2. Two American SJ radars and a few of the early British type
267.
3. A submarine Commanding Officer who failed to attack a promising
target ‘because the risk was too great” more than once
or twice, would have lost his command and be liable to action
under the Articles of War “Every person subject to this Act,
who, on signal of battle being
made, does not do his utmost to engage the enemy shall suffer
death or such other.
4. All these figures are for “attacks” in which several
torpedoes were normally fired and not for individual torpedoes.
5. Not all submarines had stern torpedo tubes. See Appendix I.
There is no mention of the ninety degree angling facility which
was available in most submarines at the outbreak of war. It was
only used three times in 1940–1 and the angling gear was
discontinued in wartime
built submarines.
6. This was probably because individual aiming required the periscope
to be up for longer and so tended to be used at the longer ranges.
7. The tables in the report dealing with hits on large enemy warships
do not agree with the known results of the attacks. The figures
in the report have not therefore been followed and have been adjusted.
The opportunity has been taken to extend them to the whole war
from 1939–1945.
|
8. 1941–1945
figures as in the Hollerith Report.
9. Totted up in pencil on the back of an envelope.
10. No doubt the reader is by now bemused by these figures. A
successful attack on an Independent sinks or damages the ship.
A successful attack on a convoy is so assessed if it hits and
sinks or damages one ship while the others proceed on their way
unscathed.
11. She fuelled at Exmouth Gulf on her way north.
12. She fuelled at Darwin both on her way out and way back.
13. A notable exception was in the Mediterranean during the landings
in Sicily In 1943.
14. A number of offensive patrols in enemy waters were also placed
in the hope of catching U-boats.
15. The number of Allied submarines that came under British operational
control totals forty-nine. This includes the ten French submarines
which operated in the North Sea before the collapse of France
and the six Free French but not the eight Giraudist boats which
joined after the Invasion of North Africa. It does not include
some Netherlands submarines in the East Indies which were never
under British operational control or boats such as the Norwegian
B1 and the Yugoslav Nebojsca which were too old and scarcely ever
put to sea.
16. Dutch and French built submarines include units of the Greek
and Polish Navies and the totals are of those that served under
British operational command.
17. U570, the Greek Matrozos, captured from the Italians, and
the two Vickers designed boats built for Turkey.
|