No. Sector Western border Eastern border 1 Saunders Coast 158°00'W 146°31'W 2 Ruppert Coast 146°31'W 136°50'W 3 Hobbs Coast 136°50'W 127°35'W 4 Bakutis Coast 127°35'W 114°12'W 5 Walgreen Coast 114°12'W 103°24'W Marie Byrd Land 158°00'W 103°24'W