Best anchorages and harbours in United States

Osprey Marina

Marina on the Atlantic Intracoastal Waterway at Socastee, near statute mile 373, in the Myrtle Beach area of South Carolina.

OSPREY OAKS MARINA

Waterfront marina on the Newport River near Newport, North Carolina, with wet slips, a public boat ramp and a service yard.

Ossineke Marina

Small private marina at the mouth of the Devil River where it meets Lake Huron, in the village of Ossineke on the Michigan Sunrise Coast.

Ossining

Anchorage on the east bank of the Hudson River off the village of Ossining, in Westchester County about 30 miles north of Manhattan.

• Sheltered NE, E, SE

Oswego

Anchorage off the mouth of the Oswego River on the south shore of Lake Ontario, sand bottom, protected from SE, S and SW winds.

• Sheltered SE, S, SW

Oswego Marina

Deep-water marina at the mouth of the Oswego River on Lake Ontario, at the northern terminus of the Oswego Canal.

Ottawa Beach Marina

Small county-run marina on the west side of Lake Macatawa at Holland, Michigan, just inside the channel to Lake Michigan and the closest harbour to its mouth.

Otter Creek Landing Yacht Club

Private residential yacht club on Myrtle Grove Sound at Carolina Beach, with about 100 berths split across two basins on Otter Creek Canal.

Otter Creek Marina

Full-service marina on Otter Creek, a tributary of the Bush River, at Edgewood in Harford County, Maryland.

Otter Point Yacht Club

Members' yacht club on the Bush River at Edgewood, Harford County, Maryland, on the upper Chesapeake Bay.

Outboard Service Corp

Boat repair yard and small marina on East Bedell Street in Freeport, New York, on Freeport Creek beside Rick's Marine.

Outer Banks Marina

Full-service marina at Wanchese on the south end of Roanoke Island in North Carolina, formerly known as Outer Banks Marina.

Owens Marina

Marina on the east bank of the Susquehanna River at Perryville, opposite Garrett Island, just south of the US-40 bridge at the head of Chesapeake Bay.

Owl Harbor

Quiet marina on Sevenmile Slough at Isleton, off the San Joaquin River. 165 wet berths and around 1,700 ft of side-tie dockage on a 20-acre site.

Ox Bow Marina

Large full-service marina on Georgiana Slough at Isleton, with 423 covered berths from 18 to 50 ft plus 16 large guest berths.

Oyster Bay

Tree-lined anchorage on Lake Charlevoix in Michigan, just outside the town of Charlevoix, with depths of 8 to 12 feet over mud.

• Sheltered NW, N, NE, W, E

Oyster Bay Marine Center

Full-service marina and boatyard in Oyster Bay Harbour, on the north shore of Long Island, New York.

Oyster Bay Yacht Club

Private members' marina at the junction of Lanceford Creek and Soap Creek, about 2 miles west of Fernandina Beach on Amelia Island, Florida.

Oyster Bend Yacht Club

Yacht club and marina with 75 berths on the Norwalk River at Norwalk, Connecticut.

Oyster Point Marina

Public marina of 408 to 455 berths on the west shore of San Francisco Bay, run by the San Mateo County Harbor District.

Ozello Keys Marina

Full-service marina among the Ozello Keys, in a saltwater marsh on Florida's Nature Coast.

Ozona Fish Camp

Full-service marina in the fishing village of Ozona, Palm Harbor, on St. Joseph Sound, north of Clearwater on Florida's Gulf coast.

Ozona Shores Marina

Marina at 137 Shore Drive in the village of Ozona, Palm Harbor, on St. Joseph Sound off Florida's Gulf coast.

Packery Channel

Anchorage in Packery Channel on North Padre Island near Corpus Christi, Texas, on a sand bottom.

Padre Island Yacht Club

Members' yacht club marina on Whitecap Boulevard, North Padre Island, Corpus Christi, with access to the Gulf Intracoastal Waterway.

Paerdegat Squadron Yacht Club

Members' yacht club on the north-east bank of Paerdegat Basin in Brooklyn, off Jamaica Bay.

Grandview Palace Marina

Private marina at the foot of the Grandview Palace condominium tower on the north side of North Bay Village, on Biscayne Bay between Miami and Miami Beach.

Palm Bay Marina

Small marina on Turkey Creek at the southern end of the Indian River Lagoon, near Palm Bay on Florida's Space Coast.

Palm Beach Yacht Center

Full-service marina and boatyard on the Intracoastal Waterway at Hypoluxo, Florida, with 100 berths for vessels up to 80 ft.

Palm Beach Yacht Club & Marina

Members' club marina on the Intracoastal Waterway at West Palm Beach, Florida, in the heart of the downtown waterfront.