Your alcohol-law check before paddling depends on the definition of a vessel, what counts as operating, the water and the elements of the offense. Federal rules and the laws of Pennsylvania, South Carolina and Washington do not use one interchangeable test.
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.
Key Takeaways
- Federal Part 95 defines a vessel by its capability for water transportation; a paddler navigating or propelling a kayak can fit its operating definition when its water jurisdiction applies.1
- Pennsylvania’s Title 30 §5502, checked September 19, 2026, prohibits operating or being in actual physical control of a watercraft’s movement after enough alcohol to render a person incapable of safe operation or control, separately from its concentration bands. It sets a 0.02% blood-or-breath threshold for anyone under 21 within two hours after operation or actual physical control.2
- South Carolina’s ordinary offense (§50-21-112) covers moving motorized water devices or water devices under sail; §50-21-113 covers any moving water device when impaired operation or actual control causes injury, death or property damage to someone else.3
- Washington law, the Revised Code of Washington (RCW) §79A.60.040, checked September 19, 2026, makes impairment a separate basis from its 0.08 alcohol-concentration alternative, with a shared condition of within two hours of operating.4
- The U.S. Coast Guard’s guidance, checked September 19, 2026, says there is no safe threshold for drinking and operating a boat.5
The short comparison
The sources below were checked on September 19, 2026. The three states are examples; to check your own state, use the state-rule checking guide.
| Jurisdiction | Craft and water scope | How the alcohol rule works |
|---|---|---|
| Federal | Part 95 applies to a “vessel” on waters subject to US jurisdiction, with stated statutory exceptions, and to a US-owned vessel on the high seas. Vessel includes every kind of watercraft used or capable of use for transportation on water.1 | For a recreational vessel, operation includes an essential role while it is underway, including navigation or control of propulsion. The federal rule has a blood alcohol concentration (BAC) basis of 0.08% or more by weight in blood and a separate observed-effects basis. A state statutory BAC level can replace the federal number within that state’s boundaries.1 |
| Pennsylvania | Title 30 defines watercraft as a device used on water or ice or capable of transport on water or ice, and expressly excludes seaplanes. Its separate boat definition has different exclusions. Commonwealth waters include inland, tidal and boundary waters under Pennsylvania’s jurisdiction, whether navigable or nonnavigable, and ice on them. The Fish and Boat Commission identifies canoes, kayaks and stand-up paddleboards as unpowered boats.67 | Section 5502 prohibits operating or being in actual physical control of a watercraft’s movement after enough alcohol to render a person incapable of safe operation or control. Separate alternatives include an alcohol concentration of 0.08% to less than 0.10% in blood or breath within two hours after operation or control, higher concentration bands, drug provisions and a 0.02% blood-or-breath threshold for a person under 21 within two hours after operation or control.2 |
| South Carolina | The chapter defines water device broadly, but its ordinary offense covers a moving motorized water device or a water device under sail on state waters, which exclude private lakes and ponds. The separate harm-based §50-21-113 applies to conduct “within this State,” without using that water definition.3 | The ordinary offense requires alcohol or drugs to impair the person’s faculties materially and appreciably. A separate section reaches a moving water device when operation or actual control while under the influence causes injury or death to another person or damage to another person’s property.3 |
| Washington | Vessel includes watercraft used or capable of use for transportation on water, but excludes seaplanes, inner tubes, air mattresses, sailboards, and small rafts or flotation toys used by swimmers. Operate means steering, directing or physically controlling a vessel underway; state waters are waters within Washington’s territorial limits.8 | Within two hours of operating, an alcohol concentration of 0.08 or higher shown by breath or blood analysis is one basis. Being under the influence of or affected by alcohol, cannabis or any drug is a separate basis, as is combined influence. The same two-hour condition applies to those alternatives.4 |
A number in a statute is an enforcement element, not a safety allowance. The U.S. Coast Guard says there is no safe threshold for drinking and operating a boat and describes not drinking alcohol while aboard as the safest choice.5
Federal Part 95 reaches recreational paddlecraft within its scope
Title 33 Part 95 defines vessel by capability for water transportation rather than by motor. It treats a person as operating a recreational vessel when that person has an essential role while the vessel is underway, including navigation or control of propulsion. A paddler directing and propelling a kayak can therefore fall within those terms when Part 95’s water jurisdiction applies.1
Part 95 applies on “waters subject to the jurisdiction of the United States,” a term it defines by reference to Title 33 of the Code of Federal Regulations (CFR), §2.38. The U.S. Coast Guard says that on waters overseen only by a state, the state enforces its own law; on state waters also subject to US jurisdiction, federal and state authorities have concurrent jurisdiction.15
For a recreational vessel, Part 95 says a person is under the influence at a BAC of 0.08% or more by weight in blood. It separately covers a person operating any vessel when the effect of an intoxicant is apparent from observed manner, disposition, speech, movement, appearance or behavior. Section 95.025 says a state’s statutory BAC level applies instead of the federal 0.08% level within that state’s geographic boundaries.1 These are legal alternatives; neither creates a safe amount to drink before paddling.
The Coast Guard’s public explanation expressly says federal law covers all boats, including canoes and rowboats, and recommends alternatives to drinking alcohol while afloat, calling not drinking while aboard the safest choice. Its federal boating guide also identifies 33 CFR Part 95 as the boating-under-the-influence rule.59
Pennsylvania: broad watercraft scope and alternative offenses
Pennsylvania’s current Title 30 defines “watercraft” as every description of device used on water or ice, or capable of being used as a means of transport on water or ice. That definition expressly excludes seaplanes. A separate “boat” definition covers watercraft constructed or sold primarily for transportation on water and separately excludes surfboards and similar nonpowered swimming aids, federally inspected commercial craft, and seaplanes. Neither definition names canoes or kayaks; the Pennsylvania Fish and Boat Commission separately identifies canoes, kayaks, rowboats and stand-up paddleboards as unpowered boats.67 “Operate” includes navigating or otherwise using a boat or watercraft. The title defines Commonwealth waters as all inland, tidal and boundary waters under Pennsylvania’s jurisdiction, whether navigable or nonnavigable, including ice on them.6 The Commission says operating any watercraft under the influence is illegal.7
The operative offense is not limited to one laboratory number. Section 5502(a)(1) prohibits operating or being in actual physical control of a watercraft’s movement after enough alcohol to render the person incapable of safely operating or being in actual physical control. Subsection (a)(2) separately covers an alcohol concentration of at least 0.08% but less than 0.10% in blood or breath within two hours after operation or actual physical control. The same section supplies higher-rate, drug and combined-substance provisions.2
For a person under 21, subsection (a.4) sets a separate threshold of 0.02% or higher in blood or breath within two hours after operation or actual physical control. Under subsection (a.5), a sample taken more than two hours later is sufficient to establish a concentration element when the Commonwealth shows good cause why it could not be obtained within two hours and establishes that the person drank no alcohol and used no controlled substance between arrest and sampling. Legal entitlement to use alcohol or a controlled substance is not a defense under this section.2
The Commission says alcohol affects balance, coordination and judgment and can increase vulnerability to cold-water shock. Its advice is simple: drinking and boating do not mix.10 For the equipment duties that remain in force regardless of alcohol, see the state life-jacket comparison.
South Carolina: read the two provisions separately
South Carolina’s definitions are wide in some places: water device includes a motorboat, boat, personal watercraft or vessel, as well as skis, aquaplanes, surfboards and similar devices. Its definition of state waters excludes private lakes and ponds.3
The ordinary offense in §50-21-112 is narrower than that definition. It applies to a person operating a moving motorized water device or a water device under sail on state waters when alcohol or drugs materially and appreciably impair the person’s faculties to operate.3 By those words, a kayak moved only by paddling is outside this section’s motor-or-sail condition; a moving motorized kayak or one under sail is inside it. That describes one section’s reach, not permission to paddle after drinking: §50-21-113 has no motor or sail limit.3
Section 50-21-113 uses different language. It reaches operating or having actual control of a moving water device while under the influence when that conduct causes great bodily injury or death to another person. It separately reaches damage to someone else’s property or another person’s lesser injury. It applies to conduct “within this State”; it does not use the chapter’s “waters of the State” definition, which excludes private lakes and ponds.3 So a kayak can be outside §112’s motor-or-sail condition and still within §113.
Washington: the numeric and impairment bases are separate
Washington defines a vessel as watercraft on the water used or capable of use for transportation, subject to its express exclusions. A conventional kayak or canoe used for transport fits that general wording. The law defines operation as steering, directing or physically controlling a vessel that is underway, and the chapter defines “waters of the state” as any waters within Washington’s territorial limits.8
RCW 79A.60.040 provides multiple alternatives under a shared condition: within two hours of operating a vessel. One is an alcohol concentration of 0.08 or higher, shown by breath or blood analysis. Another is being under the influence of or affected by alcohol, cannabis or any drug. A further alternative covers combined influence.4 The impairment basis does not disappear merely because a reported alcohol concentration is below 0.08.
Plan for a sober operator
The Coast Guard says alcohol affects judgment, vision, balance and coordination and that boating stressors can intensify its effects. It describes not drinking alcohol while aboard as the safest choice and suggests keeping any drinking ashore with time before returning to a boat.5 That plan belongs beside the rules check for the place you launch and the broader Safety library.
Keep the float-plan and trip-communication guide beside your launch-rule check.
Footnotes
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Electronic Code of Federal Regulations, 33 CFR Part 95, §§95.005, 95.010, 95.015, 95.020 and 95.025; version retrieved through the official eCFR API dated June 23, 2026 and checked September 19, 2026. ↩ ↩2 ↩3 ↩4 ↩5 ↩6
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Pennsylvania General Assembly, Title 30 §5502, checked September 19, 2026. ↩ ↩2 ↩3 ↩4
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South Carolina Legislature, Code Title 50 Chapter 21, §§50-21-10, 50-21-112 and 50-21-113; checked September 19, 2026. ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7
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Washington Legislature, RCW 79A.60.040, checked September 19, 2026. ↩ ↩2 ↩3
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U.S. Coast Guard, Boating Under the Influence, checked September 19, 2026. ↩ ↩2 ↩3 ↩4 ↩5
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Pennsylvania General Assembly, Title 30 §102, checked September 19, 2026. ↩ ↩2 ↩3
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Pennsylvania Fish and Boat Commission, Unpowered Boat Regulations, checked September 19, 2026. ↩ ↩2 ↩3
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Washington Legislature, RCW 79A.60.010, checked September 19, 2026. ↩ ↩2
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U.S. Coast Guard, A Boater’s Guide to the Federal Requirements for Recreational Boats, revised November 2023, p. 35. ↩
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Pennsylvania Fish and Boat Commission, Hazards on the Water, checked September 19, 2026. ↩