What is the abbreviation of the passage discovered by Hudson and Button?
Thomas Button: Sir Thomas Button (died April, 1634) was a Welsh officer of the Royal Navy, notable as an explorer who in 1612–1613 commanded an expedition that unsuccessfully attempted to locate explorer Henry Hudson and to navigate the Northwest Passage. Northwest Passage: The Northwest Passage (abbreviated as NWP) is, from the European and northern Atlantic point of view, the sea route to the Pacific Ocean through the Arctic Ocean, along the northern coast of North America via waterways through the Canadian Arctic Archipelago.
NWP