Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_94 ( final_decommission VARCHAR, original_name VARCHAR )

### Question ###
When was the ship originally named sachem finally decommissioned?

### Accurate SQL ###

SELECT final_decommission FROM table_name_94 WHERE original_name = "sachem"