Simple intelligence for your boat

Upload anything. Ask anything. Bosun keeps learning your boat.

Simple pricing

Two weeks free with the whole app, no card and nothing to cancel. Then pick the plan that fits how much you use Bosun.

Try free

Get to know Bosun

$0 for 14 days
Try free

Weekender

Light use, for now and then

$9 per month
Choose

Coastal

Most weekends, or a season

$29 per month
Choose

Offshore

Most weeks, or living aboard

$39 per month
Choose

Bluewater

The most use, every day

$49 per month
Choose

Hibernate

$2.99 per month

Keep your account in the off season without paying for the full subscription. See your manuals, boat record and chats, and download everything. Wake your boat with one tap.

Don't know which plan?

Billed monthly in USD. No annual plan. Cancel anytime before your plan renews and you won't be charged again.

FAQ

What is Bosun and how does it work?

Bosun is the assistant inside BosunMarine. You upload everything you have about your boat. Bosun takes it in, sorts it and builds a record of what's aboard, then answers your questions in plain language, showing the page each answer came from. It keeps learning from every page you upload, every question you ask and everything you tell it.

How is usage counted?

Questions, voice calls and reading your papers all come out of one monthly amount, shown as a bar. Long, in-depth answers, calls and big reads use more. Before a read, Bosun tells you how much of your month it will use.

What if I run out?

Upgrade, or add extra usage for $5, $10 or $15. Your bar also starts again at the start of each month.

Is the free period really free?

Yes. For 14 days you use the whole app with no card and no payment details, so there is nothing to cancel.

Can I cancel?

Yes, anytime. Cancel before your plan renews and you won't be charged again. If you're only away for the season, Hibernate keeps your boat for $2.99 a month.

Not ready yet?

Leave your email and we'll write now and then with what's new in Bosun. No more than once a month, and every email has a one-tap way out.

We use it only for this. See our Privacy Policy.

Which plan?

Find your plan

Two quick questions, then pick your boat's manuals. Bosun counts their pages on this device; nothing is uploaded.

How often are you on the boat?
How much work do you do on the boat?

PDFs, as many as you like. The same file twice counts once.