Ocracoke Inlet, 27 miles west-southwest of Cape Hatteras Light, is entered over a shifting bar between the southern end of Ocracoke Island and the northern end of Portsmouth Island; the bar is subject to frequent changes. A lighted whistle buoy marks the approach. Other buoys marking the inlet are not charted, because they are frequently shifted in position; local knowledge is advised. Ocracoke Inlet Crab Spawning Sanctuary, a Marine Managed Area (MMA), is in the inlet near Ocracoke Island and Pamlico Sound.
Ocracoke Light (35°06'32''N., 75°59'10''W.), 75 feet above the water, is shown from a white tower near a clump of woods on the western part of Ocracoke Island and about 3 miles northeastward of Ocracoke Inlet. Ocracoke Coast Guard Station is 0.4 mile north of the light.
A microwave tower about 1 mile east-northeast of Ocracoke Light is reported to be prominent.
Several channels or sloughs lead from Ocracoke Inlet through the shoals to deep water in Pamlico Sound. Teaches Hole Channel follows the western side of Ocracoke Island and connects with Silver Lake through a dredged channel at Ocracoke. It also joins Big Foot Slough Channel northwest of Ocracoke which leads to Pamlico Sound. In 1977-June 1978, the midchannel controlling depth in the entrance channel to Silver Lake was 10 feet. Teaches Hole Channel is subject to frequent changes; buoys are frequently shifted in position. In April 1998, the controlling depth in Big Foot Slough Channel was 11 feet except for shoaling along the eastern edge; thence in February 2007, shoaling to 4.8 feet was reported between Daybeacon 10B and Daybeacon 11; caution is advised. The channel is reported to shoal considerably between dredgings. Strong currents have been experienced in these channels. Mariners are advised to exercise caution while navigating in the area.
A swash channel, marked by a light and daybeacons, connects Big Foot Slough Channel with Nine Foot Shoal Channel, which leads off in a northwesterly direction. The controlling depth is about 5 feet through the swash channel to Pamlico Sound. Some local vessels use this channel as a short cut, but Big Foot Slough Channel is the recommended channel.
There are other unmarked shallow channels leading from Ocracoke Inlet to Pamlico Sound, but they should not be used without local knowledge because of the shifting shoals.
The town of Ocracoke is 3.5 miles inside the inlet.
Tides: The mean range of tide is 1.9 feet over the bar at Ocracoke Inlet and 1 foot in Silver Lake. In the channels, the height of the water depends upon the direction and force of the wind.
Currents: The currents in the inlet and connecting channels are influenced by the winds. The ebb current usually has a greater velocity than the flood. Velocities up to 4 knots have been observed. Current predictions for several locations in the channels may be obtained from the Tidal Current Tables.
The most recent Army Corp depth survey is at:
http://www.saw.usace.army.mil/Missions/Navigation/HydrographicSurveys/SideChannelsSmallHarbors.aspx
Boater reported June 2017: Entered 1 hour before LW 26 June 2017. Draft 4.5 feet. Followed a local fishing boat into the entrance and then Local Coast Guard up to Silver Lake. Depths were good in the main but with a couple of sections that got down to 2 to 2.5 feet under the keel. The inlet carries 6 feet if you know where to go. However, a few of the buoys are wrong. There is plenty of shoal areas.
Notes:
- From RW safe water mark buoy 1 is WSW and missing its top.
- Buoy 1 is green, but the 2 local fishing boats left it to Stb, but kept very close to it. They then went NW following the rest of the channel buoys down the middle.
- At buoy 10 it got shallow, gave the buoy quite a wide berth around the tip of the island as it shoals out from the island.
- At buoy 22 there is an effective triangle of reds. 22 stays to stb by 20 feet. The next red stays to port and the further red stays 20 feet to stb. So a straight line through the middle of the triangle. It got shallow here.
- Just after 30 is 30a. Take a sharp right turn towards the base of the radio mast. Leaving G31 well to port as it shoals badly around here.
- After this it is a straight run up to Silver Lake. On entering Silver Lake stick closer to the greens through the break water.
The boater reported that without following the fishing boat he would have struggled to identify G1. Without the CG he would probably have run aground. But with the tide low and flowing out he could see most of the shoaling and would have been able to check the forward motion quickly to get off the sand. Doable but a bit nerve wracking