Hawaii kayak, canoe and paddleboard rules
No registrationState ramp decal
Last checked Oct 26, 2026 against the official sources listed below. Rules change; confirm with the agency before you go.
| Registration | Not needed without a motor Registering and titling a manually powered kayak is optional. Kayaks with motors of 5 hp or more must be registered and titled. |
|---|---|
| Launch or access permits | A state launch ramp decal is available, and needed if you launch a kayak from a state launch ramp. |
| Life jackets, whistle and light | Federal rules apply (see below). |
| Aquatic invasive species | No paddlecraft AIS sticker or permit found on the official pages we checked. Always clean, drain and dry your boat. |
Official sources
Hawaii permit checker
Kayak, canoe, SUP or inflatable, with or without a motor
River conditions: Hanalei River nr Hanalei, Kauai, HI
Federal rules on every state's waters
- Life jacket: a U.S. Coast Guard-approved wearable life jacket for each person aboard canoes, kayaks and paddleboards. Children under 13 must wear one while underway unless the state sets its own age rule.
- Sound signal: carry a whistle or horn; your voice doesn't count.
- Light: from sunset to sunrise and in poor visibility, have a white light (flashlight or lantern) ready to show in time to prevent a collision.
- Night signals: manually propelled boats are exempt from daytime visual distress signals but must carry night signals on coastal waters after dark.
Sources: 33 CFR Part 175 · USCG Boater's Guide to Federal Requirements · USCG Boating FAQ