How to sell half a boat (instead of selling the whole thing)

General information, not legal, tax or insurance advice. Rules vary by state, marina and insurer, and they change. Check with them (and a lawyer in your state) before you sign anything.

If you're thinking about selling because you only get out a few weekends a year, there's a middle path: keep the boat and sell a share of it. A buyer pays you a buy-in for their half (or third), and from then on the slip, insurance and upkeep are split. You keep your boat, your slip and most of your summer weekends, and your costs drop by half.

1. Check the two things that can stop a deal

Your lenderIf there's a loan on the boat, the lender usually has to approve a new owner on the title. Many sellers use the buy-in to pay the loan down or off.
Your marinaAsk whether a co-owner can be added to your slip agreement, and whether there's a fee or approval step. Our marina-ready checklist has the questions to ask.

2. Price the share

Buy-in = fair value of the boat today × share size, adjusted for anything you both agree on. Back it up with recent comparable sales or a marine survey; it makes the conversation easy.

Monthly = the buyer's share of fixed costs: slip or storage, insurance, routine service, winterization, registration. Fuel is normally pay-as-you-go by whoever uses the boat.

Example: a pontoon worth $40,000 with $9,000 a year in fixed costs. A 1/2 share is a $20,000 buy-in plus $375 a month toward costs.

3. Decide what kind of partner you want

Before you list, write down how you use the boat (which days, how often, who comes along) and what would make a good partner: someone who boats weekdays if you boat weekends, similar standards for care, a similar budget for upgrades. The right match matters more than the fastest one.

4. List it where boat-sharing buyers look

Describe the boat honestly (year, engine hours, service history, known issues), the share size, the buy-in, the monthly, the slip location and how you'd like to split time. Add clear photos. On CoBoating, listings are free during launch and every listing is reviewed by a person; buyers request an intro and you choose who to talk to. Your contact details stay private until you accept.

5. Meet, sea trial, survey

Meet at the dock, take the boat out together, and let a serious buyer arrange a survey. It protects you both and settles questions about price.

6. Put it in writing and make it official

Sign a co-ownership agreement (start with our template, free with sign-up) and have a lawyer in your state review it.
Transfer the share on the title and registration. Each state differs; North Carolina, for example, requires notice of a partial-interest transfer within 15 days (NC guide).
Update insurance and the slip agreement.
Set up a shared calendar and a way to split bills (a joint account or a simple monthly settle-up).

Common questions

How do I price half of my boat?

Start from the boat's fair market value today (recent sales of the same make, model, year and engine, or a survey), multiply by the share size, then adjust for anything you agree on, such as new electronics or a fresh engine service. Separately, set a monthly amount that covers the buyer's share of slip, insurance and upkeep.

Do I lose control of my boat if I sell half?

You share decisions, so write down who decides what. Many agreements let either owner approve repairs under a set dollar amount, require both owners for anything bigger, and give each owner the first right to buy the other out.

What if my co-owner wants out later?

A good agreement answers this up front: notice period, a right of first refusal for the remaining owner, how the price is set (appraisal or survey), and what happens if nobody wants to buy (sell the whole boat and split the proceeds by share).

Will my marina let me add a co-owner?

Often yes, but it varies. Co-owning is not subletting, and many marinas that ban sublets allow partners who are on the title and the slip agreement. Ask before you list.

Ready? List a share of your boat. It takes about five minutes.