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178,015.39

72,062.00



755,434.41



422. MM 07



387i
1,355



268f
1.738J



S12.978.75

20,225.00

9,752.00

1,895.50

16,815.84

65.00

400.10



S8.843.75
7,964.00

10,048.00
3,091.00
5,365.97



439.00



50



30



Clearances issued .
Bills of health iss led



277
28S



214
217



ALL VESSELS ENTERING AND CLEARING PORT.







Port of Cristobal.




Port of Balboa.




No.

of
ships.


Registered

gross
tonnage.


Registered

net
tonnage.


No.

of

ships.


Registered

gross
tonnage.


Registered

net
tonnage.


Ships entering.
All vessels, including those transiting Canal.
Vessels entering port but not transiting Canal .
Vessels transiting Canal and handling passen-
gers and cargo at terminal ports


558
84

117


3,715,041
661,421

752,893


2,421,283
389,297

450,395


575
65

98


3,600,396

394,157

618,133


2,549,189
379,892

375,260


Ships eh -iriii'i.
All vessels, including those transiting Canal. .
Vessels clearing port but not transiting Canal .
Vessels transiting Canal and handling passen-
gers and cargo at terminal ports


554
80

113


3,723,641
643,000

742,272


2,433,871
377,871

444,159


452
6

96


2,789,693
30,049

609,269


1,751,887
18,935

370,662



March 25, 1931



THE PANAMA CANAL RECORD



491



MOVEMENT OF PASSENGERS.












At Cristobal.


At Balboa.




First-
class.


Others.


Total.


First-
class.


Others.


Totil.


Disembarking:


1,080
185


1,195
127


2,275
312


157
311


647
185


804




496




1,265


1,322


2,587


468


832


1,300






Embarking:


943
145


548
117


1,491
262


37
287


30

250


67




537




1,088


665


1,753


324


280


604


Remaining on board:


1,887

948

7,084


1,577
995
110


3,464
1,943
7,194


1,900
1,041


1,683
782


3,583




1,823








5


72


77




9,919


2,682


12,601


2,940


2,537


5,483




11,184
11,007


4,004
3,347


15,188


3,414


3,339
2,817


6,783




14,354 |


6,087











PASSENGER-CARRYING VESSELS THROUGH CANAL.



Atlantic to Pacific.
Pacific to Atlantic .



Total .



Total Passenger-

commercial
vessels.



212
219



carrying

vessels.



Per cent
of total

transits.



25.0
29.2



27.1



In addition to the aforesaid, 71 passenger-carrying vessels called at the port of
Cristobal and 4 at Balboa without transiting the Canal, making a total ol 192.
passenger-carrying vessels calling at Canal ports during the month.

AIRCRAFT ENTERING AND CLEARING.

During the month of February, 1931, 34 commercial airplanes entered and 33
cleared at Cristobal, and none at Balboa.

COMMISSARY SALES TO VESSELS.
The following is a statement of commissary sales to vessels during the month of
February, 1931, together with the total sales in the corresponding month in 1930
and 1929:



Sales at Cristobal to:
Commercial vessels .
Government vessels.
P. R. R. vessels ....



Ic;



Total sales, February, 1931.
Total sales, February, 1930.
Total sales, February, 1929.



Sales at Balboa to:

Commercial vessels.
Government vessels.



Total sales, February, 1931 .
Total sales, February, 1930.
Total sales, February, 1929.



$1,900.65
332.70



2,242.15



3,106.92



Groceries.



Cold
storage,



$10,397.04

1,462.55

409.91



$25,321.20

12,216.94

215.99



12,269.50



19,328.17



4,331.80



714.15
2,804.00



3,518.15
1,164.51



15,291.56



1,207.95



37,754.13



64,483.12



Laundry.



Miscel-
laneous.



$400.41

8.17

578.84



987.42



803.28



50,881.97



9,217.55

52,636.59



01,854.14



8,782.60



10,957.93



15,337.03 j 49,719.48



911.76



498.58
1,410.88



$8,342.55

1,744.81

220.47



10,307.83



15,830.02



Total.



$46,361.85

15,765.17

1,434.01



63,561.03



103,551.51



8,100.71

8,547.58
29,325.36



1,909.46



1,087.49



26,483.25



73,482.



559.10



37,872.94



12,166.07



26,160.71



79,517.80



20,185.81
95,926.81



116,112.62



79,475.18



135.46S.55



The aggregate sales to Government vessels during the month was Si 11,691.98; to
Panama Railroad vessels, $1,434.01; and to other commercial vessels, $66,547.66;
making the total sales to all vessels $179,673.65. The figures are subject to minor
change on final audit.



492



THE PANAMA CANAL RECORD



March 95, 19S1



LOCK OPERATIONS.

The following tabulation shows the number of lockages, and the number of vessels
passing through the locks during the month of February, 1931, as compared with the
corresponding month in 1930 and 1929:



Locks.



Number of lockages.



Commercial.



North. South. Total



Noncommercial.



North. South. Total.



Comparative
grand totals.



Feb., Feb., I Feb.,
W29. 1930. 1931.



Gatun

Pedro Miguel
Mirafiores . . .

Gatun

Pedro Miguel
Mirafiores. . .



207
214
214



194
204
199



401
418
413



503
515
466



490
515
500



452
473
466



Number of vessels put through locks.



217


212


429


30


82


112


611


596


541


219


209


428


40


91


131


674


619


559


219


209


428


41


93


134


636


616


562



Includes tolls-paying craft under 20 tons.

CLASSIFICATION OF NONCOMMERCIAL VESSELS.



Gatun.



Pedro

Miguel.



Mirafiores.



Army and Navy vessels. .
Panama Canal equipment
Launches (under 20 tons) .
Vessels for repairs



91
38



The total consumption of water for lockages, maintenance, and loss in leakage was
as follows in February, 1931, as compared with the preceding month and the corre-
sponding month in 1930:



Lockages

Maintenance

Leakage

Total, February, 1931

Total, January, 1931..

Total, February, 1930



Gatun.



Cubic feet.
1,677,170,000
29,570,000
50,000,000



1,756,740,000



1,936,730,000



1,323,760,000



Pedro
Miguel.



Cubic feet.
962,380,000



20,000,000



982,380,000



1,118,770,000



1,043,460,000



Mirafiores.



Cubic feet.
964,580,000



20,000,000



984,580,000



1,178,420,000



1,053,700,000



HYDROGRAPHY.

The hydrographic conditions in the Canal Zone and vicinity during the month of
February, 1931, are shown in comparative form in the following tabulation:



February.



1930.



1931.



February — Years of record .



Maximum. Minimum. Mean.



Discharge of Chagres River at Alhajuela

Maximum momentary discharge for the month

Gatun Lake watershed, total yield

Gatun Lake watershed, net yield

Draft on Gatun Lake for lockages and power . .



C. f. s.

666

1,500

936

40

2,065



C. f. s.

623

852

1,085

120

^2,064



C. f. s.
3,315

'43,500
5,077
4,207
2,919



C. f. s.
516



C. f. s.



1,197



705
-287
1,106



1.763

837

2,064



' February 1, 1909. > 1914 excluded.

3 One unit of Mirafiores Diesel-electric power plant in operation February 1st to 16th; two units in operation 17th to 28th.

The monthly mean discharge of the Chagres River at Alhajuela for February,
1931, was 623 c. f. s., which is 48 percent below the 30-year average of 1,197 c. f. s.
The maximum monthly mean discharge on record for February is 3,315 c. f. s. in
1909, and the minimum is 516 c. f. s. in 1912. There were no rises of 5 feet or more
during the month. The maximum momentary discharge for the month was 852
c. f. s. at elevation 92.17 feet on the 28th, and the minimum was 502 c. f. s. at eleva-
tion 91.62 feet on the 26th and 27th. The maximum momentary discharge on record
for February is 43,500 c. f. s. at elevation 105.25 feet on February 1, 1909, and the
minimum is 400 c. f. s. at 91.35 feet on February 29, 1912.






March S*,1SS1 THE PANAMA CANAL RECORD 493

Gatun Lake varied in elevation during February from a maximum of 85.71 feet on
the 1st to a minimum of 84.62 feet on the 27th. The total yield of Gatun Lake
watershed was 1,085 c. f . s. which is 38 per cent below the 18-year February average.
The maximum total yield on record for February is 5,077 c. f.s. in 1915, and the mini-
mum is 705 c. f. s. in 1920. The net yield (total yield minus evaporation) amounted
to 120 c. f. s. or 290 million cubic feet, which is equivalent to 0.06 foot on Gatun
Lake.

Miraflores Lake varied between a maximum of 53.88 feet on the 10th and a
minimum of 53.20 feet on the 8th. The mean elevation for the month was 53.53
feet, and at midnight on the 28th the lake stood at 53.42 feet.

SEISMOLOGY.

Six seismic disturbances were recorded during the month. Four were of distant
origin and two of local origin.

ELECTRICAL DIVISION.

r

The gross generator output of the Gatun hydroelectric station for the month was
2,990,200 kilowatt hours, and the computed water consumption was 2,287,408,336
cubic feet. Continuous service was maintained throughout the month. The Mira-
flores Diesel-electric station had a gross generator output of 2,458,600 kilowatt hours,
and the fuel oil consumption was 4,809.94 barrels. This station continued to carry
a one-engine load of approximately 2,600 kilowatts for the purpose of water conserva-
tion, and on the 17th of the month a second engine was put into operation for the
remainder of the month.

In addition to the usual operating and maintenance work performed, electrical
additions or repairs were made on 41 vessels during the month. There were 346 work
orders issued during the month, as compared with 386 issued during the previous
month.

MECHANICAL DIVISION.

During the month of February, 1931, miscellaneous repairs were made on 50 vessels
at Cristobal and 30 at Balboa. Six vessels were dry-docked at Cristobal and 3 at
Balboa. The tanker El Bauro entered drydock for complete overhaul of engines,
deck and hull. The overhaul of the M. S. Frost was completed during the month.
Work was carried forward on extensive repairs to the M. S. Yomachichi.

MUNICIPAL ENGINEERING DIVISION.

On the Thatcher Highway under construction from the west bank of the Canal
opposite Balboa to the Zone boundary line near Arraijan, 19,400 cubic yards of grad-
ing were completed, 2 culverts constructed, headwalls placed on 4 culverts, and 800
cubic yards of rock crushed. On the Paraiso-Summit road cut-off, fabrication _ of
bar mats was completed and 300 square yards of.pavement laid. In connection with
the municipal improvements at the Naval Air Station at Coco Solo, 2,515 square
yards of road sub-grade were completed, and 3,000 square yards of 6-inch concrete
road surface was laid, in addition to other miscellaneous municipal work.

Work on several improvement projects in the cities of Colon and Panama, and in
the Canal Zone, was carried on.

The usual work was performed on roads, streets, walks, and the sewer and water
systems. The amount of water pumped during the month totaled 768,638,000
gallons.

DREDGING DIVISION.

The general movement along the waterfront of West Culebra slide continued
throughout the month, with an average movement of two-tenths of a foot toward the
Canal, between stations 1770-00 to 1777-00 and'1788-00 to 1794-C0 W. There was
no southward movement between stations 1770-00 and 1797-00 W. The reference
points on this slide showed no movement. There were no other slides or any new
bank breaks in the Cut during the month. There was no interference with shipping
on account of slides during the month.

A suction dredge worked the entire month in the Folks River borrow pit, excavating
a total of 111,000 cubic. yards of sand, coral, and claj'. This material was pumped to
the Colon fill with the assistance of the relay pump barge through an average pipe
line length from the dredge to relay of 1,630 feet and from the relay to the dump of
3,972 feet, a total of 5,602 feet. The total amount of material removed from the
borrow pit to date is 462,800 cubic yards of which 308 400 cubic yards remained in
place, giving a run-off of 33.4 per cent. The area of completed fill is 16.5 acres.

The total excavation during February, 1931 , was 1,372,850 cubic yards, as follows:



494



THE PANAMA CANAL RECORD



March «5, 1931



Work excavation:

Canal prism, Gatun Lake —
Project No. 3

Canal prism, Gaillard Cut-
Project No. 3

Maintenance

Canal prism, Pacific entrance —

Maintenance

Plant excavation:

Colon fill

Total



Wet excavation.



Earth.



28,050



49,200
8,750



1,097,000
111,000



1,294,000



Rock.



12,300
34,950



Total.



78,850



59,650



61,500
43,700



1,097,000
111,000



1,372,850



The ferry operating at the north end of Pedro Miguel locks functioned 28 days
during the month. One thousand two hundred and sixty-eight (1,268) single trips
were made, and 402 Panama Canal, 1,530 U. S. Army, and 6,492 other vehicles, a
total of 8,424, were ferried across the Canal.

MADDEN DAM PROJECT.

A report was received from the Designing Engineer who, with four assistants, is
in Denver collaborating with engineers of the United States Reclamation Service in
connection with the design and specifications of the main dam and power station, and
the saddle dams. Work of an outstanding nature on which considerable progress was
made by the Canal engineers and their consultants was the final report on stress and
stability' studies, which was in the course of preparation at the end of the month;
computations for design of spillway piers, drum gate chambers, and water pressure
on spillway crest; designs for the 82-inch internal differential needle valves, which
were practically completed and ready for detailing at the end of the month; study for
special crane for handling needle valve parts; studies of several arrangements of the
power units on what is believed to be the final layout. Parallel with the machinery
layouts, architectural studies for the power plant buildings are being developed.
Effects of 1,000-year flood were treated in a pap^r, furnishing the data for fixing
the elevation of the top of the spillway gates at elevation plus 250 feet.

On the Isthmus, studies for Alhajuela water supply were continued and preliminary
plans and estimates, accompanied by sketches, were prepared; preparation of draw-
ings and charts for final geological report was continued; study and report on bids for
fabrication and delivery of transmission line towers, and study of preliminary layout
of outdoor substation were made ; final rock contour map at dam site, final gravel map,
and revised drawings to conform with final cross-section at dam site were made and
forwarded to Denver. Work of a miscellaneous nature consisting of surveying, silt
investigations, seepage investigations, gaugings, geological investigations, etc., was
continued.

OCCUPANTS OF QUARTERS.

The number of persons, including men. women, and children, occupying Panama
Canal quarters on February 28, 193!, was 24,209, composed of 8,161 Americans,
2,957 of whom were men, 2,469 women, and 2,735 children; 178 Europeans, 87 of
whom were men, 31 women, and 60 children; and 15,870 West Indians, 4,428 of
whom were men, 2,831 women, and 8,611 children. The total number of persons in
quarters on February 28, 1930, was 22,316.

WORKING FORCE.

The following tabulation shows the number of gold and silver employees as of
February 18, 193 1 , with a comparison of the working force for the preceding month
and for February, 1930:





Total employees.

February, January,
1930. 1931.


As of February IS


1931.




Go'd.


Silver.


Total.


Operation and Maintenance:
Office


195 116
390 418

842 1,213

983 2,006

1 2S2 1 105


57
169
100
354
199

14
474
199

22


63

232

1,093

1,504

1,004

187

838

659

293


120




401




1.193




1,858




1,203


Madden Project


1,203
1,429

842


249

1,362

R3fi


201


Mechanical


1,312


Marino


858


Fortifications


469 340


315








7,635


7,735


1,588


5,873


7,461



Marches, 1031



THE PANAMA CANAL RECORD



495





Total employees.


As of February 18


1931.




February,
1930.


January,
1931.


Gold.


Silver.


Total.


Supply Department:


2,377
1,565
116
130
119
331


1,905
1,553
117
121
110
324


200
232
2
8
8
79


1,641
1,390
210
119
104
246


1 841


Commissary


1,622
212


Hotel Tivoli


127




112
325






Total


4,638


4,130


529


3,710


4,239




211

1,156

846


203

1,100

884


203

282
546


6
848
332


209




1 130


Executive Department


878


Total


2,213


2,187


1,031


1,186


2,217


Panama Railroad Company:


339

189

1,523

365


317

196

1,741

270


45
63
81
38


266

127

1,262

220


311




190
1 343




258






Total


2,416


2,524


227


1,875


2,102


Grand total, February, 1930


16,902




















Grand total, January, 1931




16,576


















Grand total, February, 1931






3,375


12,644


16,019









Additions to the 'gold force on the Isthmus in February were as follows:
Reemployed in the United States, 1; employed on the Isthmus, 5; reemployed on the
Isthmus, 8; total, 14. Separations from the gold force totaled 20, as follows:
Resigned 9; discharged, 9; retired, 1; died, 1. At the end of the month there were
on file 775 applications from residents of the Isthmus for employment.

VITAL STATISTICS.

A total of 160 deaths occurred during the month of February, 1931, among the
population of the Canal Zone, and the cities of Panama and Colon (population,
143,636), which is equivalent to an annual death rate of 13.37 per 1,000 population.
The leading causes of death were: Tuberculosis (various organs), 33; pneumonia
(broncho and lobar), 17; nephritis (acute and chronic), 10; organic diseases of the
heart, 9; and diarrhea and enteritis, 9. There were 8 deaths from syphilis, 6 from
apoplexy, and 2 from leprosy. There were 26 deaths among nonresidents, which are
not included in the above statistics.

There were 302 live births and 23 stillbirths reported during the month. Including
stillbirths, this is equivalent to an annual birth rate of 27.15. Deaths among children
under 1 year of age numbered 34, giving an infant mortality rate based on the
number of live births reported, of 112.58.

The total number of malaria cases reported from the Zone and the cities of Panama
and Colon during the month was 100, of whom 14 were employees (2 white and 12
colored), 18 were members of employees' families (all colored), 8 were Canal Zone
agriculturists, 37 were other civilian nonemployees, and 23 were Army and Navy
personnel. Of the 32 employees and members of employees' families, 28 were
probably infected outside our sanitated areas, as they gave a history of working,
living, or having been in such areas at night previous to their becoming sick.

There were three deaths from malaria among residents — one a colored child who
had been visiting in the interior where the infection was contracted, one a Canal Zone
agriculturist, and one a Panamanian child residing in the city of Panama.



RECEIPTS AND SALES OF MATERIAL AND SUPPLIES.

The value of material ordered on United States requisitions for which invoices
were received on the Isthmus during the month totaled $264,998.85, of which
§257,664.13 was for the Department of Operation and Maintenance, and $7,334.72
for other Panama Canal departments.

Cash sales on the Isthmus from stock, fuel oil, scrap, and obsolete and second-hand
material, amounted to $43,701.10.



496



THE PANAMA CANAL RECORD



March 2-5, 1931



FINANCIAL STATEMENT.

The following statement shows in a condensed form the aggregate revenue and ex-
penditures for the month of January, 1931, as compared with January, 1930, with
the figures for the first 7 months of the current fiscal year as compared with the
same period in the fiscal year 1930.

It is impossible to submit figures for the month of February at the time of writing
this report, since all charges, etc., involved in the accounting have not been completed.





January, 1930.


January, 1931.


To the end of January.




Last year.


This year.


Tolls


$2,360,222.49

340,803.94


$2,108,157.19
394,755.21


$16,188,773.35
2,549,246.26


$15,005,047.24
2,423,055 33






Total transit revenues

Total transit expenses


2,701,026 43
1,076,367.27


2,502,912.40
1,286,496.79


18,738,019.61
7,691,514.30


17,428,102.57
8,074,443.63


Net transit revenues

Three per cent capital charge . . .


1,624,659.16
622,767.81


1,216,415.61
626,623.19


11,046,505.25
4,345,307.14


9,353,658.94
4,382,960.34


Transit surplus


1,001,891.35


589,792.42


6,701,198.11


4,970,698.60


Business revenues

Business expenses


1,764,379.02
1,665,116.84


1,620,774.47
1,554,698.71


11,254,283.31
10,620,156.53


10,643,494.89
10,158,015.53


Net business revenues

Three per cent capital charge


99,262.18
63,751 .10


66,075.76
65,444.98


634,126,78
463,601.63


485,479.36
481,338.98


Business surplus


35,511.08


630.78


170,525.15


4,140.38




4,465,405.45
2,741,484.11


4,123,686.87
2,841,195 50


29,992,302.92
18,311,670.89


28,071,597 46


Combined expenses


18,232,459.16




1,723,921.34
686,518 91


1,282,491.37
692,063.17


11,680,632.03
4,808,908.77


9,839,138 30


Three per cent capital charge


4,864,299.32


Combined surplus


1,037,402.43


590,423.20


6,871,723.26


4,974,838.98-



Respectfully,



H. Burgess,

Governor.



Report of Cargo Discharged and Laded by Vessels Entering and Clearing
from Port of Cristobal, C. Z., for Two Weeks Ending March 21, 1931.



Name of vessel.


Line or charterer.


Arrived.


Departed.


Cargo —


Discharged


Laded.










Tons.


Tons.
133








March 8








United Fruit Co

Royal Netherlands S. S. Co




March 8




4


Pastores

Helder


March 8.
March 9


5

97


672
146




60




French S. S. Line

Pacific Steam Navigation Co

Sudden & Christenson

Panama Mail S. S. Ca

Panama Mail S. S. Co


March 9,

March 9
March 9

March 9

March 10.
March 10
March 10.

March 10.
March 10.
March 11.
March 11.

March 11

March 11.


March 9

March 9.
March 10.
March 10
March 11.
March 11
March 11.
March 11.
March 11.

March 13,
March 11. .
March 11.

March 11

March 11.


20

57

183

255

1,506

150

105

68

11,941

(')

209

651

25 2

3

5,542

475

383

242

458

349

C)

55

369

1


195


Oroya

Gen. M. H. Sherman..

Guatemala

City of San Francisco.


107

( 2 )

85
878






634






41


Pollux


Anglo-Saxon Petroleum Co


(')




111




150


Tela




46






(')


Witell




266




Elders & Fyffes, Ltd . .


( ] )




Panama R. R. S. S. Line




Ulua


March 11.
March 11.
March 11.
March 11.
March 11.
March 12
March 12.
March 12.


March 12
March 12
March 12

March 12

March 14.
March 12.
March 12.


14




Leyland S. S. Line

Royal Mail Steam Packet Co


(')




33




261


Cali




164






28


Duchess D'Aosta


Pacific Steam Navigation Co

R. Foster


39


C. C. Acme


March 12


March 12


(')



No cargo discharged.



! No cargo laded.



March 25, 1931



THE PANAMA CANAL RECORD



497



Name of vessel.


Line or charterer.


Arrived.


Departed.


Cargo —


Discharged


Laded.






March 12,
March 12




Tons.

83

50

320

23

1,034

227

(■)

21

14

128

97

202

231

67

62

1,141


Tons.
177












March 12
March 12.
March 12,

March 13
March 13
March 13

March 13

March 13


March 13.
March 13
March 13
March 13.
March 13.
March 13


83






266






235


Nosa Queen

Laguna


N. 0. & S. A. S. S. Co


80




7


Pacific Steam Navigation Co


62
926
27


Cefalu


Standard Fruit & S. S. Co

United Fruit Co


454






Tela


United Fruit Co






455










United Fruit Co


March 14. .


March 14., .
March 12


48




( 2 )






540




United Fruit Co








89












345


Ulua ..


United Fruit Co


March 15.

March 15.

March 16. . ,
March 16.
March 16.
March 17.
'.larch 17.

March 18.
March 18.
March 18.
March 18.
March 18.
March IS,
March 18.
March 18


March 16.
March 20,
March 20
Mirch 16.
March 17.
March 17.
March 18
March 18.
March 19.

March 18


24

97

623

70

98

(')

C)

169

342

175

1,392


655


Margaret Johnson. . . .




( 2 )




381






141|






128






198


Pacific Shipper




337


Royal Netherlands S. S. Co


84






Online LibraryIsthmian Canal Commission (U.S.Panama Canal record (Volume v.24 (1930-31)) → online text (page 72 of 109)