Key takeaways
- Semi-rigid means a rigid keel with buoyant tubes along the gunwale, which is what makes it both fast and stable.
- When a lookout radios a position, a boat that gets there in minutes finds animals still where they were reported.
- The water passes within arm's reach, which changes an encounter more than any amount of deck height would.
- There is nothing overhead. Sun protection is your own responsibility from the moment you board.
What a semi-rigid boat actually is
The hull is solid, moulded and shaped like any fast boat's. What makes it semi-rigid is the collar of inflated tubes running along both sides at gunwale height. That collar does two things at once: it adds enormous buoyancy right where a boat needs it, and it acts as a fender against anything the hull might meet.
It is the design that rescue services, coastguards and patrol craft use around the world, which tells you most of what you need to know about how it behaves. It is very hard to swamp, it recovers quickly from a wave, and it is nearly impossible to capsize under normal conditions.
The tubes also make it the safest boat to have alongside a large animal. There is no hard edge at the waterline, and nothing that could injure a dolphin choosing to swim up against the hull.
Why speed matters here
This operator works with lookouts stationed on the high ground above the coast. They spot from land and radio a position down to the boat. That method only pays off if the boat can act on the information quickly.
A pod of dolphins does not stay put. A position reported ten minutes ago describes where animals were, not where they are, and the gap widens with every minute of transit. A boat that covers the distance in a third of the time arrives inside a much smaller circle of uncertainty.
So the hull choice and the spotting method are not two separate features. They are one system, and the speed is what makes the shore observers worth having at all.
How the ride feels
Lively. On flat water it is exhilarating and smooth, the boat planing along with spray going out sideways and the coast sliding past. In a swell it becomes bouncier, and you feel each wave through the seat rather than watching the horizon tilt gently.
Most passengers straddle a padded seat with a handhold in front, which is the arrangement that lets your body absorb the motion instead of fighting it. Sitting properly and holding on is not a formality, and the briefing covers it before departure.
The counterintuitive part is that many people who normally suffer at sea find a semi-rigid easier than a large slow boat. Seasickness comes from a rolling, delayed motion rather than from speed, and a small fast hull produces sharp movement that your body reads and adapts to far more readily.
The orange semi-rigid holding position while a pod surfaces alongside
Being close to the water
The single biggest difference from a catamaran or a cruise boat is height. On a semi-rigid you sit barely above the surface. The water is right there, an arm's length away over the tube.
When a dolphin comes to the boat, it comes to you rather than to a rail three metres above. Guests write about animals swimming directly beside the hull and about calves passing under the tubes. No taller vessel can offer that proximity, whatever else it offers.
It is also better for photography, since you are shooting along the surface rather than down onto it. A dorsal fin from deck height is a shape on the water. The same fin from a low boat is an animal against a horizon.
What it asks of you
It asks that you can get in and out of a boat that moves under you, sit unsupported for a couple of hours, and hold on when the skipper opens the throttle. That is not demanding, but it is not nothing either.
It asks that you accept spray. On most days it is occasional and refreshing. On a lumpier day, the front seats get wet. A windbreaker is on the operator's own bring list for exactly that reason and it is genuinely worth having.
And it asks that you take the sun seriously, because there is nothing at all between you and the sky for two and a half hours. Hat, sunscreen, and reapplication if you burn easily. The wind over an open boat hides how much sun you are taking.
How it compares with the catamarans
Funchal has excellent catamaran trips, and they are a genuinely different product rather than a worse one. A catamaran gives you shade, room to walk about, indoor seating, a bar and a stable platform. It is the comfortable option, and for a family with small children or anyone with mobility limits it is usually the right one.
What it does not give you is speed to a sighting or closeness to the water. Those are the two things this boat is built around, and they are what a keen wildlife watcher will care about most.
The honest summary is that the semi-rigid is the enthusiast's boat and the catamaran is the comfortable one. Choose against what you actually want from the morning rather than against which sounds more impressive. Any dolphin cruise Funchal offers on a catamaran will beat this one for comfort; none of them will beat it for getting there.
Getting the most from the seat you have
Board early enough to choose. The bow seats are the most exciting and the wettest; the stern is drier and steadier; the middle is the compromise most people are happiest with over a full trip.
Keep a hand free. Everything you want to hold, use or photograph competes with the hand you need for the boat, and a phone in a lanyard or a pocket solves a problem before it happens.
Move when the boat stops. Once the engines are down at a sighting the crew will let people shift about, and the animals rarely stay on one side. The passengers who see the most are the ones who noticed that the boat is now stationary and it is fine to turn round. Choosing a Funchal whale watching speed boat over a slower vessel is a decision about priorities rather than quality, and it is worth making deliberately.
