A longtail (reua hang yao) is a handbuilt wooden boat, 8-12 metres long, powered by a converted car or truck engine on a long pivoting shaft. A speedboat is a modern fibreglass hull with two or three outboard motors. They look different, sound different, ride differently, and exist for different purposes. Both take you to Krabi’s islands. The experience of getting there is almost nothing alike.
The longtail engine sits at the stern, mounted on a long metal pole that extends out behind the boat. The propeller at the end of that pole is what gives the boat its name. The driver steers by pivoting the entire shaft left or right, which is a completely different mechanical logic from anything most travelers have operated or ridden in before. Watch the driver for a few minutes and it becomes oddly hypnotic. He’s not turning a wheel; he’s physically swinging a four-metre arm through the air to change direction.
These boats have been built and operated in Krabi for generations. The engines originally came from truck and tractor salvage, and many still do. The hull is constructed entirely by hand, no plans, techniques passed from builder to builder through direct instruction. Each boat gets painted in its captain’s chosen colors. The bowsprit carries colored silk garlands and flowers placed there each morning to honor Mae Ya Nang, the spirit goddess of boats, and the water spirits believed to provide safe passage. That area of the bow is considered sacred. You don’t touch it.
A speedboat is none of that. It’s an efficient, modern vessel built to cover distance quickly and carry groups comfortably. The deck sits higher out of the water, there’s usually a covered seating area, the engines are purpose-built outboards rather than repurposed machinery, and it can sustain 50-60 kilometres per hour in a way a longtail simply cannot. It gets you there faster. It does not carry fifteen decades of fishing history with it.
Speedboats travel roughly twice as fast as longtails, covering the same route in about half the time. For short crossings to nearby islands, this difference is minor. For longer routes like Phi Phi (45 km from Ao Nang), the time saved is significant: 35-45 minutes by speedboat versus 90 minutes or more by longtail. Whether speed matters depends entirely on how far you’re going and how you want to spend your day.
The numbers by route from Ao Nang, by longtail: Railay Beach takes about 15 minutes. Poda Island is 25 minutes. Chicken Island runs 30 minutes. Hong Island stretches to around 45 minutes. Phi Phi is over 90 minutes, which is the point where most operators won’t take longtails at all, both because of fuel range limitations and because the open-sea crossing in any kind of conditions becomes genuinely uncomfortable in that hull for that duration.
By speedboat, those times roughly halve. Railay in 10 minutes. Poda in 12. Hong Island in 20. Phi Phi in 35-45 minutes. The practical implication is this: if your route stays within the inner islands (4 Islands circuit, Hong Island, Railay), the time you save on a speedboat is 15-25 minutes each way. That’s a meaningful addition to beach time for some travelers and a non-issue for others. If you’re going to Phi Phi and want more than an hour on the island, the speedboat isn’t optional.
Where speed becomes genuinely irrelevant: when you’re on a private charter and the point is the journey. A couple wanting to drift along the coast at low tide, stopping wherever looks good, anchor in a cove, snorkel a reef nobody else is at that moment. That’s a longtail day. The slow pace is the product.
Trying to decide between the lagoon-filled Hong Islands and the classic 4 Islands circuit that most first-time Krabi visitors default to? Check out our Hong Islands vs 4 Islands guide before you commit to either.
One thing operators don’t explain upfront: speedboats on choppy days actually slow down more than longtails do, because the impact of hitting waves at speed becomes physically painful for passengers. A longtail doing 25 km/h in light chop is unpleasant but tolerable. A speedboat doing 55 km/h in the same conditions is a series of impacts that make people grip the rail. In genuinely rough seas, the speed advantage disappears, and the longtail’s lower profile sometimes handles the conditions more quietly.
Private longtail charters start at 2,500 THB for a half-day, covering 8 people. Private speedboats start at 8,500 THB for a half-day, covering 20-25 people. Per-person on group tours, longtails run 600-900 THB versus 900-1,200 THB for speedboats. Longtails are 50-70% cheaper per boat but carry fewer people, so the per-person math closes quickly with larger groups.
The private charter calculation is where most travelers stop doing the math too early. A private speedboat at 8,500 THB for a half-day sounds expensive next to a longtail at 2,500 THB. But the speedboat holds 20 people. Split between eight travelers, the speedboat is 1,062 THB each. Split between the same eight on a longtail, it’s 312 THB each. For two people, the longtail is dramatically cheaper and still private. For a group of ten, the per-person gap tightens considerably.
All prices verified June 2026. National park fees are paid separately in cash at the park.
Rainy season (May to October) drops private charter prices 20-30% on both types. The trade-off is weather unpredictability. A longtail operator is quicker to cancel on bad days than a speedboat operator because the hull has less tolerance for open-water conditions. If you’re visiting in low season and flexibility doesn’t worry you, that price reduction is meaningful.
One cost that catches people: transfer fees. Many operators offer free pickup within Ao Nang but charge 800-1,000 THB round-trip for guests staying in Krabi Town, Klong Muang, or Tubkaak. Confirm pickup coverage when you book, whichever boat type you choose.
Want to know what Krabi actually looks like during the wet season and whether it’s still worth visiting if the dates are fixed? Here’s our Krabi in rainy season guide so you plan around the conditions properly.
photo Private Luxury Longtail Boat Day Tour from Krabi – Custom
For families with young children, a private longtail is the better choice for nearby routes: it moves more slowly, the pace is flexible, and boarding at a beach rather than a pier means less stressful logistics with small kids. For older children who enjoy speed, or for longer routes like Phi Phi, a speedboat with a covered deck is more practical. Avoid putting toddlers on either boat in any kind of swell.
The thing that makes private charters work for families isn’t the boat type: it’s the word “private.” When you have the boat to yourself, the captain goes back when you need to go back. A three-year-old who has had enough at 1pm isn’t a problem you need to negotiate with a group. You just leave. That flexibility is worth more to most families than any difference in hull design.
Longtails sit very low on the water. Kids respond to this in two ways: some love the closeness to the surface, the ability to trail a hand in the wake, the tactile proximity to the sea. Others find the instability unnerving, especially when the boat rocks in the wash from a passing vessel. The longtail narrows significantly toward the bow, so seating near the front on choppy days involves real movement. Younger children should sit amidships, where the ride is most stable.
Speedboats with covered sections provide shade, which solves one of the main family problems on an all-day tour. Sun exposure on a longtail is high: the sides are open, the roof coverage minimal, and children burn faster than adults on the water. If your tour runs past midday on either boat type, bring a rash guard for every child. Apply reef-safe sunscreen before boarding, not when you arrive at the island.
One note on boarding: longtail passengers typically wade through shallow water or step across a narrow gunwale to board from a beach. With an infant, this requires one adult to be free and sure-footed. Speedboats usually board from a pier with a clear step-up. Small logistical difference, but worth knowing when you’re managing a child and a dry bag at the same time.
If you’d rather hand the logistics to someone who’s guided families through these waters for over a decade, our team at Krabi Boat Tours will match you to the right setup for your children’s ages before you commit to anything.
Family boat tours in Krabi need different planning than adult-only trips – our Krabi boat tours with kids guide breaks down the best age-appropriate routes, what to watch out for on the water, and which operators genuinely cater to families.
Longtails comfortably reach Railay Beach, the 4 Islands circuit (Poda, Chicken, Tup, Phra Nang), and Hong Island from Ao Nang. Beyond that, fuel range and open-sea conditions make longer crossings impractical. Speedboats reach all of the above plus Phi Phi Don, Phi Phi Leh (Maya Bay), Bamboo Island, and the outer Koh Haa group. If Phi Phi is on your list, a speedboat is not optional.
The practical range limit for longtails is approximately 25-30 kilometres from the departure pier. Past that, operators cite fuel range, weather exposure, and passenger safety in open-water conditions. Phi Phi sits roughly 45 kilometres from Ao Nang. Longtails technically can make that crossing, and occasionally do, but the journey takes 90 minutes each way in calm conditions and becomes genuinely dangerous in any swell. Most experienced operators won’t take longtails to Phi Phi, and the few that will are not operators you want to be on a boat with.
Trying to figure out which four islands the tour actually visits and whether the stops are worth a full day of your Krabi trip? Check out our Krabi 4 Islands tour guide before you commit to anything.
For the inner islands, longtails have a meaningful advantage over speedboats in one specific situation: shallow access. The longtail’s pivoting shaft means the propeller can be raised or tilted to clear coral and rocky shallows that a fixed outboard would damage. This is why longtails can enter lagoons and anchor close to beaches in ways that larger speedboats cannot. The hidden coves inside Hong Lagoon at low tide, accessible only by kayak or shallow-draft vessel, are reachable by longtail when other boats wait outside.
Want to structure your Krabi island hopping days into something more intentional than just booking whatever tour leaves next from the pier? Here’s our Krabi island hopping itinerary guide so you get the most out of every day on the water.
photo from tour Hong Islands Speedboat Tour from Ao Nang – Beaches
Both are safe with a licensed operator who enforces life jacket use and observes passenger limits. All boat drivers in Krabi must hold a license from the Department of Marine. Neither boat type is inherently more dangerous than the other; what determines safety is the operator’s judgment on weather, the condition of the vessel, and whether they hold firm on cancelling when conditions warrant it.
Life jackets are compulsory on both types of vessels for all passengers. A legitimate operator will insist on this, not ask. If you board any boat in Krabi and life jackets are not provided or are stored under seats “in case you want them,” that’s a signal about how this operator approaches other safety decisions too.
The mechanical difference worth understanding: longtails are narrower and higher-sided relative to their beam, which makes them more prone to rolling in cross-swells. They recover well in calmer conditions but require the driver to actively read and respond to wave patterns. Speedboats have a wider, flatter hull and sit lower relative to their width, which gives them more inherent stability in larger swells, though they hit waves harder at speed. Each type has a failure mode. Longtails roll; speedboats slam.
The practical safety factor that matters most: does your operator cancel when they should? An operator who runs tours in marginal conditions because they don’t want to disappoint a booking is more dangerous than any difference in hull design. The guide’s decision about whether to go is the actual safety mechanism. Ask what the cancellation policy is in bad weather before you pay. A confident, honest answer tells you something about how they operate when nobody is watching.
The bowsprit decoration on longtails isn’t just cultural detail: the flowers and silk garlands are replaced fresh each morning before departure. A captain who maintains this ritual is a captain who is paying attention to the start of their working day. It’s not a guarantee. But it’s a signal.
photo from Private Luxury Longtail Boat Tour from Krabi -Exclusive Coastal Cruise
Travelers who’ve taken both consistently report that the longtail produces stronger memories and better photographs, while the speedboat produces more island time and less physical fatigue. The longtail experience is described as more local, more immersive, and more raw. The speedboat is described as more efficient and more comfortable. First-timers often wish they’d done a longtail first. Repeat visitors overwhelmingly choose speedboats for longer routes.
The noise is what gets mentioned most about longtails, and travelers split almost evenly on how they feel about it. The converted truck engine runs loud, a mechanical roar that fills the hull and makes conversation at normal volume impossible. Some travelers hate it. Others say it’s part of the atmosphere in a way that’s hard to explain until you’ve been on one. You’re not insulated from where you are. The boat sounds like something that was built to work, not to perform.
Photography on a longtail is objectively different from a speedboat. You’re lower on the water, closer to the limestone cliffs, shooting from the open gunwale with a 360-degree view. The boat itself is visually striking in the frame. The speedboat, sitting higher, with a canopy and standardized fittings, produces the kind of images that look like they belong in a booking platform thumbnail. Both are beautiful. One has more character.
The repeat-visitor pattern from our 11,700 travelers is consistent: people who come back to Krabi tend to do their first trip on a group longtail or a longtail private charter, and return visits shift toward private speedboat charters for longer routes. The longtail is for understanding what Krabi is. The speedboat is for getting more of it in the same amount of time.
First time booking a boat tour in Krabi and not sure where to start beyond the pier? Here’s our Krabi boat tours guide so you don’t end up on the wrong boat heading to the wrong islands.
The seasickness data is the most counterintuitive result we track. Most travelers assume speedboats are rougher. In calm conditions, speedboats are. But on days with any kind of side swell, the longtail’s rolling motion produces more nausea than the speedboat’s forward bounce, because the inner ear responds worse to rotational movement than to vertical impact. If you’re prone to seasickness and the sea isn’t flat, the speedboat is the safer choice, not the more dramatic one.
Book a longtail if: you’re going to nearby islands (Railay, 4 Islands, Hong), you want a private charter for a small group, you care about the cultural experience, and the sea is calm. Book a speedboat if: Phi Phi is on your list, you’re traveling with young children or elderly family members who need shade and stability, your group is larger, or you’re prone to seasickness. If you have multiple days, do one of each.
The cleanest decision framework: where are you going and how many people are with you?
Two people, inner islands, calm conditions. Private longtail. It’s around 2,500 THB for the boat, completely private, and the experience of drifting between Poda and Chicken Island in a handbuilt wooden vessel with the engine turning over quietly behind you is the version of Krabi that people remember ten years later.
Family of five including a seven-year-old and a toddler, full-day tour. Private speedboat. The covered deck handles the midday sun. The faster crossing keeps the toddler from losing patience before you reach the first beach. You can request stops at the shallower beaches for the kids without worrying about other passengers’ schedules. Worth every extra baht of the charter price.
Solo traveler on a tight budget who wants Phi Phi. Group speedboat tour, 900-1,200 THB, done. The longtail can’t get you there in any practical sense, and the group speedboat to Phi Phi covers the route well at a price that leaves money for everything else.
The gap between a guided Krabi tour and a DIY island-hopping day is bigger than most visitors expect – our Krabi tour vs DIY island hopping guide breaks down the real trade-offs on both sides.
If you want to talk through which option fits your specific dates, group, and route, the team at Krabi Boat Tours has run both boat types across every island in this guide. We’ll give you a straight answer, not a sales pitch.
Not practically. Phi Phi is roughly 45 km from Ao Nang. The crossing takes over 90 minutes by longtail in calm conditions and becomes dangerous in any swell. Most operators won’t attempt it, and the ones that will are not operators worth trusting with your safety. For Phi Phi, take a speedboat or the passenger ferry.
On calm days, both are manageable. In any kind of side swell, the longtail’s rolling motion produces more nausea than the speedboat’s forward bounce. If you’re prone to motion sickness, the speedboat is the lower-risk choice. Take medication the night before departure regardless of which boat you choose.
Yes, with life jackets provided and on calm days. Young children should sit in the middle section of the boat where movement is least pronounced. Private charters are strongly recommended for families so you can turn back if a child becomes distressed. Avoid putting infants or toddlers on either boat type in any kind of swell.
Yes. Private longtail charters are available from 2,500 THB for a half-day regardless of group size. For two people, this is often cheaper per-person than a group speedboat tour and gives you complete flexibility over timing and stops.
The decorations at the bow honor Mae Ya Nang, the spirit goddess of boats and journeys, as well as the water spirits believed to provide safe passage. The practice blends Buddhist and animist belief and has been part of Thai maritime culture for generations. The garlands are refreshed each morning before the boat departs. The bow area is considered sacred and should not be touched by passengers.
Longtails produce significantly better photos. The boat itself is visually striking, you’re low on the water near the limestone cliffs, and the open sides give a clean 360-degree field of view. The morning light on a longtail running between karsts is one of the signature images of Krabi travel. Speedboats are more comfortable but photograph like any other white fibreglass boat.
Written by Ryan Supakorn Thai tour guide since 2011 · Founder, Krabi Boat Tours Ryan has guided over 11,700 travelers through Krabi’s islands, lagoons, and coastline since founding the agency.
