Crossing Channels and Sharing Water With Big Boats

A kayak can be difficult for the crew of a large vessel to see. On U.S. inland waters, the current Inland Navigation Rules apply to all vessels, and the U.S. Coast Guard’s 2024 Navigation Rules handbook sets out the lookout, collision-risk, narrow-channel, light, and sound provisions that matter here. ¹

One thing to clear up right away is the myth of automatic kayak right of way. On U.S. inland waters, Rule 9 says a vessel under 65.6 feet (20 meters) or a sailing vessel must not impede a vessel that can safely navigate only within a narrow channel or fairway.

So the job falls to you. You need to know how to cross these channels the right way, stay visible to big boats, and understand what the law asks of paddlers like you.

This page summarizes published safety guidance. It is not a substitute for instruction, and conditions on your water may differ. Check the current rules for the state and water you paddle.

Here is the short version of the named rules and guidance:

• Rule 5 requires every vessel to maintain a proper lookout at all times.
• Rule 7 requires every vessel to use all available means appropriate to the conditions to determine whether a collision risk exists.
• Rule 9 requires a vessel following a narrow channel to keep near the outer limit on its starboard side as is safe and practicable, and a vessel under 65.6 feet (20 meters) must not impede a vessel that can navigate safely only within that channel.
• The American Canoe Association’s undated “Rules of the Road” brochure, accessed September 10, 2026, says the safest way for paddle craft to cross the path of a powerboat is astern. ²

Rule 33 does not require a vessel under 39.4 feet (12 meters) to carry the sound-signal appliances prescribed for larger vessels, but it does require some other means of making an efficient sound signal. The ACA brochure, accessed September 10, 2026, separately tells paddlers to keep a whistle handy.

Each piece is set out below, one step at a time.

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Key Takeaways

• The U.S. Coast Guard’s 2024 Navigation Rules handbook requires every vessel to maintain a proper lookout and use appropriate means to determine collision risk; Rule 9 adds the narrow-channel duties.
• The Coast Guard’s October 1989 Boating Safety Circular 69 says large ships and tows need deep channels, may not steer well while slowing, and can have a long blind spot ahead. ³
• The American Canoe Association’s undated “Rules of the Road” brochure, accessed September 10, 2026, says the safest way for paddle craft to cross the path of a powerboat is astern.
• Inland Rule 25 lets a vessel under oars exhibit sailing-vessel lights or an all-round white light, or keep a white torch or lantern ready to show in time to prevent collision; the ACA brochure, accessed September 10, 2026, separately recommends bright clothing and reflective tape on paddle blades.

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Kayak Right of Way and the Coast Guard’s Navigation Rules

The Inland Navigation Rules in 33 CFR 83 apply to all vessels on U.S. inland waters. ⁴ The provisions below govern your kayak or canoe when you share the water with bigger boats.

Rule	Your Requirement
Rule 5	Maintain a proper lookout at all times by sight, hearing, and all other means appropriate to the conditions
Rule 7	Use all available means appropriate to the conditions to determine whether a collision risk exists; if in doubt, treat the risk as existing
Rule 9	When following a narrow channel, keep near its outer limit on your starboard side as is safe and practicable; a vessel under 65.6 feet (20 meters) must not impede a vessel that can navigate safely only within the channel
Rule 25	As a vessel under oars, exhibit sailing-vessel lights or an all-round white light, or keep a white torch or lantern ready to show in time to prevent collision
Rule 30	Follow the anchor-light provisions and exceptions when anchored; a vessel under 23 feet (7 meters) is exempt when it is not in or near a narrow channel, fairway, anchorage, or waters where vessels normally navigate, and a vessel under 65.6 feet (20 meters) is exempt in a designated special anchorage area
Rule 33	If your vessel is under 39.4 feet (12 meters), provide some other means of making an efficient sound signal; Rule 33 does not require the prescribed appliances for larger vessels

Source: U.S. Coast Guard, Navigation Rules and Regulations Handbook, updated 2024

Rule 5 requires a proper lookout by sight, hearing, and all available means appropriate to the conditions. Rule 7 requires you to use appropriate available means to determine whether a collision risk exists and to treat the risk as existing if you are in doubt, according to the Coast Guard’s 2024 handbook.

When you proceed along a narrow channel, Rule 9 requires you to keep near the outer limit on your starboard side as is safe and practicable. A vessel under 65.6 feet (20 meters) or a sailing vessel must not impede a vessel that can safely navigate only within that channel, and no vessel may cross if the crossing impedes such a vessel.

Rules 20 and 25 govern your navigation lights: the light rules apply from sunset to sunrise, and prescribed lights, if carried, must also be shown during daytime restricted visibility. The weather and wind guide covers marine forecasts and advisories. Rule 9 says to avoid anchoring in a narrow channel when circumstances allow. Rule 33 does not require a vessel under 39.4 feet (12 meters) to carry the prescribed appliances for larger vessels, but it does require some other means of making an efficient sound signal; the rule does not name a whistle as the only way to comply.

Why Big Vessels Have Limited Maneuverability

Large vessels in shipping channels face real limits. The Coast Guard’s October 1989 Boating Safety Circular 69 says large ships and tows must stay in sufficiently deep channels and may not steer well while slowing. It says a large ship may need time to stop after reversing its engines.

The same circular says pilots of ships and tows can have a blind spot extending ahead of the vessel. The Coast Guard’s 1992 Boating Safety Circular 74 adds that small boats may not always be detected by ship radar. ⁵

These limits do not create a rule that every paddlecraft must stay out of every shipping channel. In a narrow channel or fairway, Rule 9 instead says not to impede a vessel that can navigate safely only within it and not to cross when the crossing would impede that vessel.

The Coast Guard’s 1989 circular advises recreational boaters to avoid large ship channels where possible. Where a route requires you to use one, Rule 9’s duties apply if it is a narrow channel or fairway. Whether a waterway counts depends on circumstances and conditions, according to the Coast Guard’s Navigation Rules FAQ: a channel that constrains two container ships may not constrain two canoes. It advises erring on the side of heeding Rule 9.⁶

You should not treat a large vessel’s ability to turn, slow, or detect you as a substitute for your own Rule 5 and 7 duties, or your Rule 9 duties in a narrow channel or fairway.

How to Cross a Working Channel Safely

A working-channel crossing starts with the Rule 5 and 7 duties, and the Rule 9 duties if it is a narrow channel or fairway. The American Canoe Association’s undated “Rules of the Road” brochure adds a crossing practice; the night-paddling guide covers additional ACA Smart Start Chapter 4 crossing guidance.

The duties are the Inland Navigation Rules the table above sets out: a proper lookout under Rule 5, determining collision risk under Rule 7, and not impeding or crossing ahead in a way that impedes a vessel that can navigate safely only within a narrow channel under Rule 9, according to the Coast Guard’s 2024 handbook.

1. The American Canoe Association’s undated “Rules of the Road” brochure, accessed September 10, 2026, says the safest way for paddle craft to cross the path of a powerboat is astern.

Lights and Sound Signals for Paddlecraft

Lights

The Coast Guard’s 2024 Navigation Rules handbook sets out the Inland Rule 25 options for a vessel under oars. It may exhibit the lights prescribed for sailing vessels; if it does not, it exhibits an all-round white light or has ready a white electric torch or lighted lantern.

The rule requires the ready white light to be exhibited in sufficient time to prevent collision.

In plain terms, you can keep an electric torch or a lighted lantern with a white light close at hand, but you must show it in sufficient time to prevent collision.

Sound

Rule 33 covers sound-signal equipment. For a vessel under 39.4 feet (12 meters), it requires some other means of making an efficient sound signal without requiring the appliances prescribed for larger vessels, according to the Coast Guard’s 2024 handbook.

Rule 35 is separate and applies in or near restricted visibility, by day or night. In that condition, a vessel under 39.4 feet (12 meters) that does not give the signals specified for larger vessels must make some other efficient sound signal at intervals of no more than two minutes. The ACA’s undated brochure, accessed September 10, 2026, separately recommends keeping a whistle handy.

Being Seen on the Water

Your visibility matters near shipping lanes and commercial traffic. The Coast Guard’s 2024 handbook requires the Rule 25 light from sunset to sunrise; Rule 20 requires prescribed lights, if carried, to be shown during daytime restricted visibility. The Inland Rule lets a vessel under oars show an all-round white light, an option the international version does not include. ^{1 6}

The demarcation line determines whether the Inland or International Rules apply, so check which set governs your water.

For added visibility, the American Canoe Association’s undated “Rules of the Road” brochure, accessed September 10, 2026, says to wear bright, noticeable clothing and use reflective tape on your paddle blades. Those measures supplement rather than replace the light required by the rule.

Small Craft Advisory Thresholds by Region

The National Weather Service’s undated Marine Forecasts FAQ, accessed September 10, 2026, says it issues a Small Craft Advisory for sustained winds, waves, or sea or lake ice hazardous to small craft. Wind and wave criteria shift by region. ⁷

Region	Wind Speed	Sea State
Eastern (ME–SC, Lake Erie, Lake Ontario)	Sustained winds or frequent gusts of 25 to 33 knots; lower-threshold harbor and bay areas may start at 20 to 25 knots, area dependent	5 to 7 feet and greater, area dependent
Central (MN–OH)	Sustained winds or frequent gusts on the Great Lakes of 22 to 33 knots, inclusive	Over 4 feet
Southern (GA–TX and Caribbean)	Sustained winds of 20 to 33 knots	7 feet or greater expected for more than 2 hours
Western (WA–CA)	Sustained winds of 21 to 33 knots	Over 10 feet, or wave steepness over local thresholds
Alaska (AK)	Sustained winds or frequent gusts of 23 to 33 knots	Rough-seas criteria are locally significant, based on user needs, and no lower than 8 feet
Pacific (HI, Guam, etc.)	Sustained winds of 25 knots or greater; Guam and the Northern Mariana Islands use sustained winds of 22 to 33 knots	10 feet or greater; Guam and the Northern Mariana Islands use combined seas of 10 feet or greater

Source: National Weather Service, undated Marine Forecasts FAQ, accessed September 10, 2026

The eastern wind threshold is generally sustained winds or frequent gusts of 25 to 33 knots, with lower thresholds in some harbors and bays. The eastern wave threshold is area dependent.

The FAQ describes frequent gusts as typically lasting more than two hours. It uses “and/or” between wind and sea or wave criteria for the Eastern, Central, Southern, and Western regions. Alaska states its wind criterion separately, then says a rough-seas advisory may be issued for locally significant sea or wave conditions. The main Pacific criterion uses “and,” while Guam and the Northern Mariana Islands use “and/or.”

The southern wave threshold has a time element: seas must reach 7 feet or greater and be expected for more than 2 hours. The western criteria also account for local wave-steepness thresholds, and Alaska may use locally significant rough-seas criteria no lower than 8 feet.

The Pacific criterion combines sustained winds of 25 knots or greater with seas of 10 feet or greater. Guam and the Northern Mariana Islands instead use sustained winds of 22 to 33 knots and/or combined seas of 10 feet or greater.

Those are the six regional criteria in National Weather Service FAQ 14, including its area-dependent conditions. Check current conditions for your own water before you launch.

Quick Recap: Paddling Near Barges and Shipping Lanes

Near commercial traffic on U.S. inland waters, the Coast Guard’s 2024 handbook requires the same lookout and collision-risk work from your paddlecraft as from every vessel. Rule 9 says to avoid impeding a vessel that can navigate safely only within a narrow channel.

When following a narrow channel, you keep near the outer limit on your starboard side as is safe and practicable. You maintain a proper lookout, determine collision risk, and carry an efficient means of making a sound signal as the 2024 handbook requires.

When you cross a working channel, the ACA’s undated “Rules of the Road” brochure names one practice; see the night-paddling guide for its Smart Start Chapter 4 crossing guidance:

• Cross the path of a powerboat astern, which the American Canoe Association’s undated “Rules of the Road” brochure, accessed September 10, 2026, calls the safest way.

You meet the applicable Rule 25 light requirement. For additional visibility, the ACA’s undated brochure, accessed September 10, 2026, recommends bright clothing and reflective tape on paddle blades.

What the Rules Ask of You Near Big Boats

Crossing a working channel starts with the rules that govern shared water: keep a proper lookout, determine collision risk, and do not cross if doing so would impede a vessel that can navigate safely only within a narrow channel or fairway.

Rule 9 gives a kayak no automatic priority over a vessel that can navigate safely only within a narrow channel or fairway.

The Coast Guard’s 2024 handbook supplies the light and sound requirements. The ACA’s undated brochure, accessed September 10, 2026, separately recommends bright clothing and reflective tape on paddle blades.

When your path crosses a powerboat’s path, the ACA brochure’s named crossing advice is to pass astern.

Use the required and recommended gear guide for the wider equipment check.

Footnotes

1. https://www.navcen.uscg.gov/sites/default/files/pdf/navRules/Handbook/Nav%20Rules%20Handbook_Corrected_08-12-2024.pdf ↩ ↩²

2. https://americancanoe.org/wp-content/uploads/documents/sei-educational_resources/brochure_rules_of_the_road.pdf ↩

3. https://uscgboating.org/library/boating-safety-circulars/BSC69.pdf ↩

4. https://www.ecfr.gov/current/title-33/chapter-I/subchapter-E/part-83 ↩

5. https://uscgboating.org/library/boating-safety-circulars/BSC74.pdf ↩

6. https://www.navcen.uscg.gov/navigation-rules-faqs ↩ ↩²

7. https://www.weather.gov/marine/faq ↩