ENSB ISD 7800N/01000E 7800N/0500E 7800N/0000E 7800N/0500W 7800N/01000W 7800N/01500W 7700N/02000W 7600N/02500W 7500N/03000W 7400N/03500W 7300N/04000W 7200N/04500W 7000N/05000W JV KUNUK BGSF