Navigating Topsail Island: A Beginner’s Guide to Buoys, Shallow Channels, and Boating Etiquette

Welcome to the area! When it comes to boating Topsail Island, the waters are beautiful, the fish are biting, and the channels are occasionally a lot shallower than they look. Navigating our local sounds, tidal creeks, and the Intracoastal Waterway (ICW) is an incredible experience, but it can quickly become stressful for visitors unfamiliar with coastal waters.

Between shifting sandbars, confusing navigation buoys, and busy weekend traffic, a little preparation goes a long way. Whether you are operating a rental boat, launching your own vessel, or paddling a kayak, here is everything you need to know to safely navigate Topsail’s waters and keep local boating courteous for everyone.

Reading the Road Signs: Understanding Coastal Buoys

Inland lakes use a simple system, but coastal waters like the sound side of Topsail rely on the U.S. Aids to Navigation System (ATONS). Therefore, the most important rule to memorize before you leave the dock is “Red, Right, Returning.”

The “Red, Right, Returning” Rule

When you are traveling inbound from the ocean toward port, or moving upstream away from the sea, you must keep Red markers on your Right (starboard) side. Concurrently, Green markers stay on your Left (port) side. These markers will also have numbers on them; red markers use even numbers, and green markers use odd numbers.

The ICW Twist: The Yellow Symbol Rule

Topsail Island is bordered by the Intracoastal Waterway (ICW). On the ICW, boats aren’t just “returning” to a single port—they are traveling long distances along the coast. To avoid complete chaos, all markers along the ICW feature small yellow geometric shapes:

• Yellow Triangle: Treat this like a Red marker. Keep it on your right when traveling south down the ICW (toward Florida).
• Yellow Square: Treat this like a Green marker. Keep it on your left when traveling south down the ICW.

⚠️ Topsail Danger Zone: Where local channels intersect with the main ICW channel, the markers can suddenly switch sides! Always look for the yellow symbols painted on the signs to know which side of the channel you actually need to be on. For a full breakdown of these shapes, you can reference the official U.S. Coast Guard ATON Booklet.

Conquering Shallow Channels and Sandbars

Topsail Island’s backcountry is notorious for shifting sands. A spot that had six feet of water last year might be an exposed sandbar today. Consequently, proper planning is essential for safe boating around Topsail Island.

• Watch the Tides: Our local tides swing by several feet twice a day. A channel that is safely navigable at 1:00 PM might leave you hard aground by 4:00 PM. Always check a local tide chart before heading out.
• Stay in the Channel: Do not cut corners between buoys. Sandbars naturally form on the inside curves of channels. Give markers a wide, safe berth.
• Read the Water: Learn to read the water’s color. Deep water looks dark green or blue, while shallow sandbars look light green, yellow, or brown. As the old saying goes: “Brown, brown, run aground.”

Boating Etiquette: Sharing the Water Safely

Topsail Island is a multi-use paradise. On any given summer day, a single creek might hold an inshore charter guide, a family pulling a tube, three jet skis, and a dozen kayakers. Safe boating relies heavily on mutual respect and understanding the vessel hierarchy.

The Vessel Hierarchy

In general, the less maneuverable a vessel is, the more right-of-way it has. This means motorized vessels must yield to human-powered craft. Powerboats and jet skis must steer clear of sailboats under sail, commercial fishing charters, kayaks, paddleboards, and canoes.

You Are Responsible for Your Wake

This is the number one law of boating etiquette, and it is legally binding. Boaters are legally responsible for any damage or injury caused by the waves their boat creates (the wake). Furthermore, you can be held liable if your wake damages a docked boat, swamps a smaller vessel, or hurts another waterman.

Approaching Kayaks, Paddleboards, and Small Craft

Human-powered vessels always have the right-of-way. A large wake can easily flip a kayak or wash a paddleboarder into the marsh grass.

• Slow Down Early: Do not zip past a kayak at full speed and expect your wake to calm down before it reaches them.
• Don’t Plow: Pulling your throttle halfway back creates a massive, heavy plow wake. Either drop your boat completely down to “No Wake” / “Idle Speed” (creating zero waves) or give the paddlers a very wide berth if you must stay on a plane.

Approaching Stationary Fishing Boats

If you see an angler anchored near a marsh line, oyster rock, or deep hole, they are likely targeting trout, flounder, or red drum.

• Keep Your Distance: Avoid running directly through the shallow flat or creek they are actively fishing.
• Pass Quietly: Slow down to an idle so your engine noise and hull slap do not spook the fish or disrupt their drift lines.

Overtaking and Passing Other Boats

If you need to pass a slower boat traveling in the same direction inside a narrow channel, signal your intent clearly. Pass on their left (port) side whenever possible, and ensure you do so at a speed that does not dangerously rock their vessel.

Quick Checklist for Your Topsail Island Boating Trip

• Check the Weather: Summer storms can pop up instantly over the sound.
• Count the Life Jackets: You must have one wearable, properly fitted USCG-approved life jacket for every person on board. Children under 13 must wear them at all times while underway on any vessel.
• Have a Communication Plan: Cell service can be spotty in the marshes. Let someone on land know exactly where you plan to explore and when you expect to return.

By mastering the buoys, keeping an eye on the tides, and treating your fellow boaters with respect, you will ensure a safe, memorable, and successful day of boating Topsail Island‘s gorgeous waters!