Life Jacket Requirements on Boats: Types, Sizes and Fit

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Every boat has that bin under the seat: a tangle of orange vests, one that’s too big for anyone and one with a buckle that snapped two summers ago. Then a seven-year-old grabs one to go down the slide, and it rides up over her ears the moment she hits the water. Life jacket requirements are simple on paper, one per person, approved and the right size, but “the right size” is the part that keeps people safe. Here’s what the U.S. Coast Guard requires, how to read the label, and how to check the fit.

In short: federal rules require a U.S. Coast Guard approved wearable life jacket for each person on a recreational boat, the right size for its wearer, in good condition and readily accessible. Children under 13 must wear one while the boat is underway unless they’re below deck or in an enclosed cabin, but a state’s own child-wear law replaces that rule on its waters. Inflatable life jackets come in adult sizes only and aren’t for weak or non-swimmers.

Life jacket requirements under federal law

The rules are in 33 CFR part 175. For every recreational boat:

• One wearable per person, used according to its approval label (and its owner’s manual if the label refers to one).
• Plus one throwable on boats 16 ft and over (canoes and kayaks exempt).
• Readily accessible: the Coast Guard says not in plastic bags, locked or closed compartments, or under other gear.
• Right size and fit for the wearer, as marked on the label, and legibly marked with the approval number.
• Serviceable: no broken or corroded hardware, no torn straps, no rips that let foam escape, and no foam that is hard, waterlogged, oil-soaked or mildewed.

Why it matters: in the Coast Guard’s Recreational Boating Statistics 2024, drowning was the cause of 365 deaths with a known cause. Of those, 310 people were not wearing a life jacket, 48 were, and for 7 it was unknown. The Coast Guard also notes that most boating drownings happen on nice days.

PFD types and levels: reading the label

You’ll see two systems on labels. Federal regulations now simply say “wearable” and “throwable”, but older jackets show a Type, and newer ones show a performance Level in newtons.

Label	What the Coast Guard says it’s for
Type I	Greatest required buoyancy; turns most unconscious people face up.
Type II	Turns some unconscious people to a position where breathing isn’t impeded.
Type III	Supports a conscious person upright; not required to turn an unconscious person. The type slide makers ask riders to wear.
Type IV	Throwable: cushions and ring buoys, thrown to a person in the water.
Type V	Restricted or special uses; the label says what it’s approved for.
Level 50 / 70	Near shore, with help or rescue close at hand.
Level 100	May have to wait for rescue, in sheltered water.
Level 150 / 275	General and offshore use; 150 turns an unconscious person to a safe position.

The newer label also shows a turn-ability icon and warnings. Some life jackets are not approved for water skiing, tubing, personal watercraft or wakeboarding, so read the warnings if your day includes towing. Slide makers, including RAVE and Lakesurf in their manuals, ask every rider to wear a USCG approved Type III life jacket.

Sizes for children

The Coast Guard sorts life jackets into four weight groups. Adult jackets may not work for children, so buy by weight, not by age:

Size	User weight
Infant	33 lb (15 kg) or less
Child	Over 33 lb to 55 lb (15 to 25 kg)
Youth	Over 55 lb to 88 lb (25 to 40 kg)
Adult	Over 88 lb (40 kg)

Labels on older child jackets may use other ranges, such as “less than 30 lb”, “30 to 50 lb” or “50 to 90 lb”. Go by the user weight printed on the label.

The under-13 rule and state variations

Federal rule 33 CFR 175.15(c) says no one may operate a recreational boat underway with a child under 13 aboard unless the child is wearing an appropriate Coast Guard approved life jacket, or is below deck or in an enclosed cabin. Federal law lets states set their own rules for children, and where a state has a child-wear statute, the state’s rule applies on its waters instead of the federal one. Two examples from the state laws:

• Florida (s. 327.50): children under 6 must wear a Coast Guard approved life jacket on boats under 26 ft while underway. Florida defines underway as any time the boat isn’t anchored, moored, tied to shore or aground.
• Minnesota (s. 86B.501): children under 10 must wear one while underway unless below the top deck or in an enclosed cabin. The rule doesn’t apply when the boat is anchored for swimming or diving.

These are examples, not a full list. Check your state’s boating agency through the NASBLA directory. Whatever the law says at anchor, a child on a slide or in the water should be wearing one: slide makers require it for every rider. More on that in kids on boats.

Inflatable life jackets: the limits

• Inflatables come in adult sizes only.
• They aren’t appropriate for weak or non-swimmers.
• They count toward the carriage rule only with a full cylinder and every status indicator green. A properly armed inflator, working oral tube and pull tab are part of “serviceable”.
• Many are approved only when worn, so check the label.

For repeated sliding and swimming, a foam Type III is the simpler choice; it’s what slide manuals ask for.

Fit check: five steps

1. Check the label for user weight and chest size, and the approval.
2. Buckle and zip everything, then tighten the straps until it’s snug but not tight.
3. Lift it by the shoulders: a foam jacket that fits won’t ride up above the chin or ears.
4. Try it in the water, close to the boat, and make sure the airway stays clear.
5. Test foam jackets for wear and buoyancy at least once a year; throw out waterlogged, faded or damaged ones.

Prices change. These are what we saw on Amazon in October 2026; check the approval and the user weight on the label before you buy.

Life jacket questions

How many life jackets do I need on a boat?

One Coast Guard approved wearable for each person on board, sized for that person, plus one throwable if the boat is 16 ft or longer (canoes and kayaks excepted).

Can a child use an adult life jacket?

The Coast Guard warns that adult sizes may not work for children, and the rules require the right size for the wearer as marked on the label. Adult jackets are for users over 88 lb.

Does a seat cushion count as a life jacket?

A Type IV cushion is a throwable device. It meets the throwable rule on boats 16 ft and over, but it doesn’t count as anyone’s wearable life jacket.

Do life jackets expire?

The federal rule is about condition: a jacket with broken hardware, torn straps, or hard, waterlogged or mildewed foam isn’t serviceable. Inflatables need a full cylinder and green indicators. Follow the maker’s instructions for inflatables.

What life jacket do I need for a boat slide?

Slide makers such as RAVE and Lakesurf ask for a U.S. Coast Guard approved Type III life jacket for every rider. See boat slide safety tips.

Back to the boat safety hub, or see the full Coast Guard equipment checklist and swimming from a boat.