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TNA / ADM 234 360

TNA ADM 234 360

TNA ADM 234 360
Collection details

TNA ADM 234 360

Naval Staff History No. 41, the official historical study of the evacuation from Dunkirk during Operation Dynamo, 26 May–4 June 1940, dated 1949.

Holding archive
TNA
Collection reference
ADM 234 360
View the archive catalogue entry ↗

Source: The National Archives, Kew, ADM 234/360. Contains public sector information licensed under the Open Government Licence v3.0.

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List page 1 of 1 Showing document pages 149–149 of this collection
Page ImageOCR textOCR tags
149 Page 149 Log in to enlarge
OCR table 1 from document page 149
TYPE OF SHIP AVERAGE LIFT PER TRIP FROM
Beaches Harbour
Personnel vessels 488 1,054
Destroyers .... .... 504 751
Minesweepers 358 432
Skoots 280 290
Drifters 140 156
Small Craft (excluding drifters) 90 116
OCR table 2 from document page 149
AVERAGE LIFT PER TRIP : AVERAGE NO. OF MINUTES SPENT:
from beaches 344 at beaches 345
from harbour 529 in harbour 117
OCR table 3 from document page 149
BEACHES HARBOUR
DATE RATE OF LIFT (men minutes) AVERAGE Lift (men) : Waiting time (minutes) RATE OF LIFT (men : minutes) AVERAGE Lift Waiting (men) time (minutes)
(1) (2) (3) (4) (5) (6) (7)
28 May 1 : 1 318 312 5.2 : 1 698 133 Arrival
29 " 1.1 : 1 391 358 5.7 : 1 763 133 of
30 " 1.4 : 1 491 356 5.2 : 1 614 118 ships
31 1.2 : 1 376 315 5.0 : 1 652 129 not
1 June 0.6 : 1 260 447 3.4 : 1 484 140 planned
2 " 1 : 1 276 284 10.3 : 1 688 67 Arrival
3 " - - - I 7.0 : 1 656 94 of ships
4 : - - - 5.2 : 1 630 122 planned
Average 1 : 1 352 345 5.5 : 1 648 117
Esti- mated 1.1 : 1 345 315 5.2 : 1 650 125
norm.
Boat Day May

Raw OCR

Unformatted machine-generated OCR for document page 149.

ANALYSIS OF THE OPERATION
CHAP. XIII
The following table shows the difference in average lift per type of vessel
from beaches and harbour respectively:
LIFT PER SHIP
TYPE OF SHIP
AVERAGE LIFT PER TRIP FROM
Beaches
Harbour
488
1,054
Personnel vessels
504
751
Destroyers
....
....
358
432
Minesweepers
280
290
Skoots
140
156
Drifters
90
116
Small Craft
(excluding drifters)
It will be seen that the average lift of all vessels was larger from the harbour
than from the beaches, and that the difference decreased with the size of
vessel. The difference was most marked in the case of personnel vessels,
which were civilian manned and consequently less efficient in boat work.
The average lift of all types of ship and the time spent in collecting the load
at beaches and in harbour respectively was as follows :-
AVERAGE LIFT PER TRIP :
AVERAGE NO. OF MINUTES SPENT:
from beaches 344
at beaches
345
from harbour 529
in harbour
117
i.e. one man per minute was lifted from the beaches as against 4.5 men per
minute from the harbour.
The average lifts and number of minutes required by large ships to load at
beaches and harbour, respectively, from day to day are shown in the following
table. Data of waiting times for small craft are incomplete and consequently
reliable figures cannot be given; much time was occupied by small craft in
ferrying troops to larger ships.
FIGURES FOR LARGE SHIPS
BEACHES
HARBOUR
DATE
RATE OF LIFT
AVERAGE
RATE OF LIFT
AVERAGE
(men minutes)
Lift Waiting
(men : minutes)
Lift Waiting
(men) : time
(men) time
(minutes)
(minutes)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
28 May
1
:
1
318
312
5.2
:
1
698
133
Arrival
29
1
763
133
"
1.1 :
1
391
358
5.7 :
of
30 "
1.4 :
1
491
356
5.2 :
1
614
118
ships
31
1.2 :
1
376
315
5.0 :
1
652
129
not
1 June
0.6 :
1
260
447
3.4 :
1
484
140
planned
2 "
1 :
1
276
284
10.3 :
1
688
67
Arrival
3 "
-
-
-
I
7.0 :
1
656
94
of ships
4 :
-
-
-
5.2 :
1
630
122
planned
Average
1 :
1
352
345
5.5 :
1
648
117
Esti-
1.1
:
1
345
315
5.2 :
1
650
125
mated
norm.
125