The plan's success depended on "Suffolk"s continually unbroken contact with the German ships. However, "Suffolk" lost contact from 00:28. For 90 minutes, Holland neither sighted the German ships nor received any further news from "Norfolk" or "Suffolk". Reluctantly, Holland ordered "Hood" and "Prince of Wales" to turn south-southwest but he detached his destroyers which continued searching to the north. However, the loss of contact should be understood as temporary and tactical only; and not strategic in terms of the tactical outcome. "Suffolk" lost contact with its reconnaissance target (the enemy fleet) in what was essentially a closed, confined rectangular space; aligned generally northeast (the entrance to the Denmark Strait) to southwest (the exit of the Strait into the Atlantic). The enemy units were firmly constrained by the Greenland ice pack to the north, and the extensive Royal Navy minefield to the south along the coast of Iceland. Given the prior warning of the German sortie, there was ample time for the Royal Navy to place armed reconnaissance at both ends of this narrow alignment. "Suffolk" and "Norfolk" were at the eastern entrance to the Strait (where contact was made immediately upon "Bismarck"s entry). Holland was waiting at the western end as the "Bismarck" force exited the Strait.