Located in Peril Strait, 1.6 km (1 mi) NW of the N coast of Duffield Peninsula, N tip of Baranof Island, Alexander Archipelago.
Russian name meaning "round" given in 1809 by the navigator Ivan Vasiliev the first; published by Lieutenant Sarichev (1826, map 19), Imperial Russian Navy (IRN), as "O(strov) Krugloy."
Appleton Cove, Baby Bear Bay, Bear Bay, Bradshaw Cove, Crab Bay, Deep Bay, Favorite Anchorage, Fick Cove, Fish Bay, Goose Cove, Haley Anchorage, Launch Cove, Liesnoi Shoal, Louise Cove, Nismeni Cove, North Arm Hoonah Sound, Poison Cove, Rodman Bay, Rodman Bay, Saltery Bay, Schulze Cove, Suloia Bay, Ushk Bay,
Point Marie, Point Sinbad, Point Siroi, Point Elizabeth, Arthur Point, Duffield Peninsula, Emmons Point, Fish Point, Haley Point, Island Point, Middle Point, Mountain Head, Near Point, Nismeni Point, Pedersen Point, Peschani Point, Pinta Head, Pogibshi Point, Range Point, Rapids Point, Rock Point, Rodgers Point, Schulze Head, Sergius Point, Shoal Point, Struya Point, Suloia Point, Ushk Point, White Cliff Point, Yellow Point,
Andersen Island, Arthur Island, Arthur Island, Bear Bay Island, Big Island, Big Rose Island, Broad Island, East Francis Rock, Elovoi Island, Emmons Island, Grasstop Rock, Haley Rocks, Hoggatt Island, Krugloi Islands, Lauf Islands, Liesnoi Island, Little Island, Little Rapids Island, Little Rose Island, Moser Island, Otstoia Island, Piper Island, Povorotni Island, Prince Island, Prolewy Rock, Rapids Island, Suloia Islet, Suloia Rock, Vixen Islands, W Francis Rock, West Francis Rock,