Understanding the ColRegs: A Guide to Safe Boating on Lake St. Clair

Whether you are a student at Lake St. Clair Sailing School or a seasoned local mariner, mastering the International Regulations for Preventing Collisions at Sea (COLREGS) is essential for safety. Often referred to as the “Rules of the Road,” these guidelines ensure that every vessel—from a 20-foot day sailor to a Great Lakes freighter—operates predictably and safely.

Why the COLREGS Matter for Sailors

The primary purpose of the COLREGS is to prevent collisions. For sailors navigating the busy waters of Lake St. Clair and the Detroit River, these rules provide a universal language for vessel behavior, signaling, and maneuvering.

Breakdown of the 38 Collision Regulations

The ColRegs are organized into five primary sections designed to cover every scenario you might encounter on the water:

General Rules (Rules 1-3): Application and definitions.
Steering and Sailing (Rules 4-19): How to navigate in sight of other vessels and in restricted visibility.
Lights and Shapes (Rules 20-31): Requirements for nighttime lighting and daytime signals.
Sound and Light Signals (Rules 32-37): Audible and visual alerts for maneuvering and warning.
Exemptions (Rule 38): Technical transitions for older vessels.

Core Boating Safety Concepts

As part of our sailing certification courses, we emphasize several “Golden Rules” that every Lake St. Clair boater must know:

1. General Safety & Vigilance

Maintain a Safe Speed: You must always travel at a speed that allows you to take proper action to avoid a collision, accounting for Lake St. Clair’s often choppy conditions and heavy weekend traffic.
The Proper Lookout: Use sight, hearing, and all available technology (like Radar or AIS) to maintain 360-degree situational awareness.
Assessing Risk of Collision: If the “compass bearing” of an approaching vessel does not appreciably change, a risk of collision exists. Take early and substantial action to stay clear.

2. Steering and Sailing Rules (The “Right of Way”)

Crossing Situations: In a power-vs-power situation, the vessel on the starboard (right) side has the right of way. As we teach in our lessons: “If to your starboard red appear, it is your duty to keep clear.”
Head-on Situations: When two power vessels meet head-on, both should alter course to starboard to pass “port-to-port.”
Overtaking: The vessel doing the passing is always the “give-way” vessel and must stay clear of the boat being overtaken.
Narrow Channels: Always stay to the starboard side of channels (like the Clinton River or the shipping lanes).

3. Lights, Shapes, and Sound Signals

To sail safely at night or in the fog, you must communicate your status:

Visibility: All vessels must display navigation lights from sunset to sunrise.
Fog Signals: In restricted visibility, use sound signals (horns or whistles) to alert others of your position.
Maneuvering Signals: Use short blasts to indicate whether you are turning to port, starboard, or operating astern.

Take the Helm with Confidence

While this summary covers the basics, the COLREGS are a detailed set of laws. At Lake St. Clair Sailing School, we dive deep into these rules during our ASA certification tracks to ensure you feel confident and compliant every time you leave the dock.