With the privatization of JNR on 1 April 1987 , all 13 locomotives were transferred to the ownership of JR Hokkaido .
JNR were also loaned for use on JR Freight services until 2006 .
With the privatization of JNR on 1 April 1987 , all 13 locomotives were transferred to the ownership of JR Hokkaido , although they were also loaned for use on JR Freight services until 2006 .