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_203_193 ( id number, "ship name" text, "in service" number, "project number" text, "type" text, "class" text, "comments" text )

### Question ###
the vaygach was commissioned for service the same year as which ship ?

### Accurate SQL ###

SELECT "ship name" FROM table_203_193 WHERE "ship name" <> 'vaygach' AND "in service" = (SELECT "in service" FROM table_203_193 WHERE "ship name" = 'vaygach')