Not every arrival at Panama was for entering the canal. The "Quarterly Cruise Reports" from which the movement data was taken did not list a port prior to entering the canal. 

Crossing & Direction

Arrive

Depart

Location

1 - from Atlantic

07-26-1919

07-27-1919

PANAMA ROADS

01-17-1921

01-22-1921

BALBOA

02-14-1921

02-25-1921

BALBOA

2 - to Atlantic

01-16-1924

01-16-1924

BALBOA

3 - from Atlantic

09-13-1927

09-16-1927

BALBOA

09-16-1927

09-17-1927

PEDRON GONZALES IS

4 - to Atlantic

12-01-1927

12-09-1927

BALBOA

5 - from Atlantic

03-14-1928

03-19-1928

BALBOA

03-19-1928

03-19-1928

BALBOA

6 - to Atlantic

06-16-1928

06-20-1928

BALBOA

7 - from Atlantic

01-17-1929

01-24-1929

BALBOA

01-27-1929

02-06-1929

BALBOA

02-06-1929

02-07-1929

PAMANA BAY

02-14-1929

02-25-1929

BALBOA

02-25-1929

02-26-1929

PANAMA BAY

02-28-1929

03-08-1929

BALBOA

8 - to Atlantic

06-11-1929

06-15-1929

BALBOA

9 - from Atlantic

06-16-1930

06-18-1930

BALBOA

10 - to Atlantic

10-24-1930

10-27-1930

BALBOA

11 - from Atlantic

02-07-1931

02-16-1931

BALBOA

02-16-1931

02-20-1931

PERLAS ISLANDS

02-20-1931

02-21-1931

PANAMA ROADS

02-21-1931

03-03-1931

BALBOA

03-06-1931

03-09-1931

BALBOA

03-09-1931

03-09-1931

PANAMA ROADS

03-13-1931

03-16-1931

BALBOA

03-19-1931

03-23-1931

BALBOA

03-19-1931

03-19-1931

PANAMA ROADS

12 - to Atlantic

04-21-1934

04-23-1934

PANAMA CANAL

13 - from Atlantic

10-24-1934

10-29-1934

PANAMA ROADS

05-09-1936

05-16-1936

BALBOA

05-22-1936

05-26-1936

BALBOA

14 - to Atlantic

06-19-1937

06-21-1937

BALBOA

16 - to Atlantic

02-03-1946

02-03-1946

PANAMA CANAL - (date estimate)