MARQUETTE — The Joseph L. Block is expected at 8 p.m. today at the Lake Superior & Ishpeming ore dock in Marquette’s Upper Harbor. Due on Saturday is the Ashtabula at 1 a.m. On Sunday, the Honorable James L. Oberstar is expected at 7 a.m. and the Lee A. Tregurtha is due at 3 p.m.