I'm researching Latvian immigrants after WWII to Venezuela.
Where can I find ship manifests for immigrants to Venezuela during the period 1946-1953?
If you are a Spanish Speaker and / or can tolerate Google Translate the following are a couple places I have found you can try.
One thing to keep in mind is they may not have traveled directly from Latvia to Venezuela and may have stopped at several ports and changed ships along their journey both in Europe, possibly North America, as well as in South America. So I would also check popular ports possibly on the way... especially Brazil per this note on this article and the United States as there is an estimated 40,000 Latvians during this time period of 1949-1951 that came through the US cities of New York, Boston, Philadelphia, and Chicago.
To note, Latvian nor any of the Baltic states are not listed as one of the popular nationality / ethnic immigration groups to Venezuela during the time period.
FamilySearch has immigration cards for this time period for Brazil if they came via one of those ports.
Resource Wise in addition to checking the American immigration sites like Ancestry.com / etc
This page BarcoseinImmigration.com is focused on Italian Immigration to South America but has good resources on ships and ports in South America as well as some searchable lists for many of the countries on one page; but the site is a bit hard to navigate and sometimes just takes you to other sites.
There is also a page on the from Spain to America website (in Spanish) that has a good collection and links for researching many South American countries but is a bit light on Venezuela.
The EveryCulture link also referenced above has a lot of specific links also to assist generally in Latvian immigration from Europe; in particular those mentioning it.
There is also the less common method, which I would not have too high of expectations, of writing the Latvian embassy in Caracas, Venezuela. If you do utilize this option I would recommend to be put in contact with a local cultural group vs. requesting specific genealogy / family history information as most embassies are not equipped to handle such requests.