Yes — most operators offer 'guaranteed share' bookings where they pair you with another solo guest of the same gender. You get the per-person twin rate.
Cabin sharing is a standard option for solo travelers and is the cheapest way to dive solo on a liveaboard. When you book, select 'twin-share with same-gender pairing' (different operators call it 'guaranteed share', 'matched share', or simply 'share twin'). The operator commits to pairing you with another solo guest of the same gender, and you pay the standard per-person twin rate.
How it works in practice: you and your roommate share a cabin with two single beds (twin) or two beds that can convert to a king. You each have your own bed, your own storage, and you share the en-suite bathroom. Most cabins have curtains or partial dividers for privacy.
What if no one else books a share cabin
This is rare but possible on small boats or off-season departures. Operators handle this in different ways: some absorb the cost and let you have the cabin to yourself at the per-person rate (great for you), some retroactively charge the single supplement (read the booking conditions), and some downgrade you to a smaller cabin to keep the math balanced. The booking page tells you which policy applies.
Tips for cabin sharing: pack neatly because you're sharing space, communicate about lights-out and morning wake-up times, respect the bathroom rotation, and use packing cubes to keep your gear organized. Most share-cabin pairings work out fine and many lead to friendships that outlast the trip.
If you have specific cabin preferences (top bunk vs bottom, port vs starboard, lower deck vs upper deck), tell the operator at booking — most try to accommodate.
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