Welcome to Adak, Alaska
51° 52' 21" N, 176° 37' 43" W

Adak Island, the most important of the Andreanof Group, is about 30 miles long and 20 miles wide at its widest part. The island is rugged and mountainous and has numerous small bays and indentations. Mount Moffett, 3,900 feet high, near the NW end, is the highest point of the island; it is snow covered the greater part of the year. The island is grass covered on the lower levels; the higher levels have a heavy growth of moss. Small lakes are numerous and there are many small

Kuluk Bay, on the NE side of Adak Island, is about 4 miles long and 4 miles wide, and is one of the best natural harbors in the Aleutians. It is entered between Zeto Point on the N and Thunder Point on the S, and includes Kuluk Bay proper, Clam Lagoon, Sweeper Cove, Finger Bay and Scabbard Bay. Tidal currents in the bay are weak and the flow appears to depend mainly upon the winds.

Zeto Point is a prominent butte rising well above the surrounding land and has several jagged pinnacles along its S face. About 1.5 miles NE of the point is Head Rock, which is large and bare.

Kuluk Shoal, consisting of several rocks covered 1¼ to 9 fathoms and marked by kelp, is about 0.8 mile S of Head Rock and 1 mile E of Zeto Point. A lighted bell buoy is about 0.6 mile E of the shoal.

A 9-fathom shoal with rocky bottom is 0.5 mile 012° from the Head Rock (see chart 16471); a
17-fathom bank with rocky bottom is 2 miles 096° from the rock.

Clam Lagoon, 0.5 mile NW of Zeto Point, can be entered only by small boats. A fixed bridge with an unknown clearance crosses the entrance. In the S part of the lagoon and outside the entrance are mudflats. The ruins of a long pier are 0.5 mile W of the lagoon entrance.

A naval restricted area is in the NW part of Kuluk Bay beginning at Zeto Point. (See 334.1320, chapter 2, for limits and regulations.) An army restrictive area is within the naval restricted area and has a radius of 1,000 yards from 51º53'05.4"N., 176º33'47.4"W. (See 334.1325, chapter 2, for limits and regulations.)

Sweeper Cove, on the SW side of Kuluk Bay, provides good shelter in 7 to 20 fathoms inside a breakwater, marked by a light on the outer end, that extends from the N side of the entrance; bottom is gray sand. A fuel tank at the W end of the cove is prominent. Sweeper Cove Entrance Light 5 (51°51'28"N., 176°35'31"W.), 55 feet (16.8 m) above the water, is shown from a skeleton tower with a square green daymark on the NW side of Lucky Point.

Gannet Rocks, on the N side of the entrance to Sweeper Cove, are bare and surrounded by shoal water. A detached shoal, covered 3½ fathoms, and a group of small islets, surrounded by shoals, are between Gannet Rocks and the shore. Gannet Rocks Light 4 (51°52'01"N., 176°36'32"W.), 45 feet (13.7 m) above the water, is shown from a skeleton tower with a triangular red daymark on the S end of the largest rock. Two water tanks, red and blue are on the high ground at the head
of Kuluk Bay about 1.2 miles NW of Gannet Rocks Light 4.

Pit Rock, the southernmost of the two large rocks on the SE side of the entrance to Sweeper Cove, is bare and surrounded by foul ground. Finger Shoal, 0.4 mile E of Pit Rock, has a rock that uncovers in the detached shoal area. A lighted bell buoy is about 300 yards NE of
the shoal.

The diurnal range is 3.7 feet in Sweeper Cove. (See the Tide Tables for daily predictions for Sweeper Cove.) During severe weather, a surge may be experienced inside the cove, making it difficult at times to remain alongside any of the piers. Heavy float fenders should be used, and vessels should be prepared to get underway.

Harbor regulations: Sweeper Cove, a former U.S. naval air station, is administered by the Aleut Enterprise Corporation who can be contacted by telephone 907-592-0185; FAX 907-592-0184 or by calling ADAK PORT OPERATIONS on 4125 kHz or VHF channel 16.

Pilotage,Adak: Pilotage, except for certain exempted vessels, is compulsory for all vessels navigating the waters of the State of Alaska. Aleutian Islands are served by the Alaska Marine Pilots. (See Pilotage, General (indexed), chapter 3, for the pilot pickup stations and other details.)

Wharves: Piers 3 and 5, on the N side of Sweeper Cove, are used by vessels drawing up to 30 feet. Pier 3 is a 616-foot (188 m) wood dock without utilities or berthing. A short barge pier is E of Pier 3. Pier 5 is a 725-foot (221 m) year-round, all purpose concrete dock. Pier 5 has utilities, berthing and is reinforced for crane operation. Pier 10 is a T-head fuel pier at the W end of Sweeper Cove with a least depth of 35 feet alongside. A black tank with a red light on top is inshore of Pier 10. A small-boat basin is at the SW end of the cove. In 1978, most of the piers in the basin were reported to be in poor condition. In 1983, it was reported that the entrance channel to the basin was marked by private buoys, had a depth of 4 feet, and kelp along the S side. In 1984, a submerged obstruction was reported in the NW end of the basin in about 51°51'06"N., 176°39'14"W.