16/10/2026
Back in Genoa, Italy, delivering superyacht helideck training.
Let’s talk about that small little “t” marked on the helideck.
What does it mean?
If the deck is marked 3.0t, it indicates a structural mass limit of 3,000 kg for the helicopter, subject to the deck’s other applicable limitations. If your helicopter is above that limit, you cannot simply land because the deck looks big enough or appears structurally substantial.
But surely the deck is built to take more than that?
Here’s where it gets interesting.
Helideck structural design must account for the dynamic loads imposed by a landing, not just the static weight of a helicopter sitting on the deck, this includes an impact load of 1.5 times the helicopter’s maximum take-off mass for a heavy landing, and 2.5 times for an emergency landing.
Why does it matter?
Because the deck’s structural capacity, the helicopter’s dimensions, operational restrictions and the vessel’s specific limitations all need to be understood before an operation takes place.
And no, “it looks strong enough” is not an engineering assessment!
Operating a helicopter from a superyacht is a specialist skill.
Understanding the helideck is just one part of the job. Vessel-specific limitations, approach and departure profiles, obstructions, wind effects and coordination with the crew all matter.
We deliver professional superyacht helicopter and helideck training, tailored to the vessel, the operation and the people involved.
If you own a yacht, manage a vessel, operate a helicopter or are responsible for onboard aviation safety, don't leave this to guesswork.
Make your next helideck operation a planned, professional operation.