Stabilizing Fins Proven at Sea

A Captain's Honest Take on the Humphree Stabilizing Fins on Board

For Thomas Lobo Eigenstetter, Captain of the Sirena 78, stabilizing fins aren't just another system on the equipment list, they're the one that's changed how he runs the boat.

"The stabilizers itself is for me the top of the range," says Thomas. "They really make a difference."

It's a simple statement, but it captures exactly what stabilizing fins are designed to do: quietly transform the day-to-day experience of being on the water, both underway and at rest.

Comfort Underway: Why Stabilizing Fins Matter More Than Most Equipment

For Thomas, the value of stabilizing fins comes down to two distinct situations on board, and both turned out to be more important than expected.

The first is simply being underway. Roll and pitch are the two motions that most affect comfort at sea, fatigue the crew, and make ordinary tasks, cooking, walking around the cabin, working on deck, harder than they need to be. With the fins active, Thomas Lobo Eigenstetter, describes the stability of the boat as "quite fantastic."

That stability isn't an abstract comfort feature. It has a direct, practical impact on daily life aboard:

"As I already said, cooking is without stabilizers, impossible. We have just normal induction plates, so this is essential in general, the live-on-board feeling, you know, and of course that nothing breaks."

That detail is worth dwelling on. Many owners think of stabilizing fins purely in terms of seasickness or rough-weather comfort. But for anyone who actually lives aboard or spends extended time at sea, fin stabilization is also what keeps loose items, galley equipment, and everyday routines intact, voyage after voyage.

180° Anchor-Hold: Stabilizing Fins That Keep Working at Rest

The second area where the captain noticed a real difference is one most people don't associate with stabilizing fins at all: anchoring.

Humphree's fins can rotate to work at anchor as well as underway, and that rotation is what Thomas Lobo Eigenstetter, highlights as a standout feature:

"What I also am very, very happy with is that when we are at anchor, the possibility that I can turn the fins 180° gives much more stability. It sails much less on the chain."

In practice, the fins can be angled so they create gentle resistance against the boat's natural tendency to swing, or "sail," on its anchor chain, a motion that's uncomfortable for everyone on board and can put unnecessary strain on the anchor and chain themselves. Instead of fighting that motion after the fact, the rotated fins use the boat's own movement to pull gently against the chain, keeping it taut and the boat settled.

"It pulls you into the chain," Thomas explains. "Actually, I don't know if there are other fin operators who offer this."

It's a feature the captain considers essential rather than a nice-to-have:

"This is quite essential, because I know it is very uncomfortable if you don't have this option. I definitely would recommend this one."

Two Jobs, One System

What stands out in Mr Lobo Eigenstetter's account isn't just that the fins work well, it's that they solve two very different problems with one system:

• Underway: Reducing roll and pitch for a stable, comfortable ride and a safer working environment on deck.
• At anchor: Using 180° rotation to reduce swinging on the chain and keep the boat settled overnight.

As Captain, Thomas Lobo Eigenstetter, puts it: "It is the ability to work on the boat while moving, and it is the anchoring."

That dual function is central to how Humphree's all-speed fin stabilizers are engineered. Unlike systems designed only for use underway, Humphree fins rotate through a full range of motion, allowing them to provide active stabilization from zero speed at anchor right through to cruising and planing speeds, without needing a generator running, thanks to the 24V DC electric drive.

Would This Captain Recommend Stabilizing Fins?

Asked directly, Thomas doesn't hesitate:

"I definitely would recommend it, because they are very efficient."

It's a conclusion built on day-to-day experience rather than a single dramatic moment at sea, better cooking conditions, fewer breakages, a calmer night at anchor, and a boat that simply feels more settled, underway or not.

Is a Stabilizing Fin System Right for Your Boat?

Stories like Thomas Lobo Eigenstetter's reflect what most owners and captains discover once stabilizing fins are installed: the benefit isn't confined to rough weather. It shows up in ordinary moments, a meal that stays on the stove, a quiet night on the hook, a deck that's safe to walk while running offshore.

If you're considering stabilizing fins for your own vessel, Humphree's team can help you find the right configuration for your boat's size, speed range, and the way you actually use it, underway and at anchor. Talk to us about stabilizing fins for your boat. 
 

Would you like to learn more about the Sirena 78? Click here.