▁DM Us . ▁ ▁S le eper ▁service ▁ ▁From ▁ 1 9 9 2 , ▁the ▁former ▁ ▁express ▁over night ▁sle eper ▁service ▁was ▁integrated ▁with ▁the ▁Ok hot sk ▁( be coming ▁Ok hot sk ▁ 9 ▁& ▁ 1 0 ), ▁featuring ▁a ▁Su Ha Ne F u ▁ 1 4 - 5 0 0 ▁series ▁sleep ing ▁car ▁sand wich ed ▁in ▁the ▁DM U ▁formation . ▁From ▁March ▁ 2 0 0 6 , ▁this ▁became ▁a ▁season al - only ▁train ▁( Ok hot sk ▁ 8 1 ▁& ▁ 8 2 ), ▁and ▁the ▁over night ▁service ▁was ▁dis cont in ued ▁entirely ▁from ▁ 1 6 ▁March ▁ 2 0 0 8 . ▁ ▁SL ▁Ok hot sk ▁J R ▁H ok ka ido ▁oper ates ▁season al ▁SL ▁Ok hot sk ▁services ▁formed ▁of ▁ 1 4 ▁series ▁passenger ▁coach es ▁ha u led ▁by ▁a ▁J NR ▁Class ▁C 1 1 ▁steam ▁locomot ive ▁and ▁assist ed ▁by ▁a ▁J NR ▁Class ▁DE 1 5 ▁dies el ▁locomot ive . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁J R ▁H ok ka ido ▁Ok hot sk ▁train ▁information ▁▁ ▁Category : H ok ka ido ▁Railway ▁Company ▁Category : Named ▁passenger ▁trains ▁of ▁Japan ▁Category : N ight ▁trains ▁of ▁Japan ▁Category : R ail way ▁services ▁introduced ▁in ▁ 1 9 5 9 <0x0A> </s> ▁Bar no ▁Mir za e va ▁( born ▁ 2 3 ▁August ▁ 1 9 9 1