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_27813 ( "Position" real, "Sail number" text, "Yacht" text, "State/country" text, "Yacht type" text, "LOA (Metres)" text, "Skipper" text, "Elapsed time d:hh:mm:ss" text )

### Question ###
What is the sail number of the yacht that had an elapsed time of 2:22:30:42?

### Accurate SQL ###

SELECT "Sail number" FROM table_27813 WHERE "Elapsed time d:hh:mm:ss" = '2:22:30:42'