MARQUETTE — The James L. Kuber is expected at 9 a.m. Saturday at the Lake Superior & Ishpeming ore dock in Marquette’s Upper Harbor. Due at 9 p.m. Saturday is the Kaye E. Barker. On Sunday, two boats are expected: the Lee A. Tregurtha at 8 a.m. and the Erie Trader at 6 p.m.