sentences:  The annual training routine began at the end of March 1901 with squadron exercises in the Baltic.On the night of 1–2 April, "Kaiser Friedrich III" ran hard aground on the Adlergrund, a shoal to the east of Cape Arkona, and "Kaiser Wilhelm II" lightly brushed the bottom.After a short inspection, it was determined that "Kaiser Wilhelm II" was undamaged, and so Prince Heinrich transferred his flag to the ship on 23 April, while "Kaiser Friedrich III" went into drydock for repairs.