[travoc]

...so places where 5 knot speed limits are often enforced to prevent wakes.

[HALtheWise]

Candela has been granted a waiver for the 12 knot speed limit in Stockholm, presumably because they make way less wake. Places like the San Francisco Bay are also clear examples of not-the-ocean but no-speed-limits.

https://candela.com/candela-p-12-enables-public-transport-fa...

[sorenjan]

They have been given permission to drive at 12 knots because they produce much smaller wakes.

https://www.hamnen.se/varldens-snabbaste-elfartyg-far-kora-f...

[SamBam]

Since they barely produce wakes when they are hydrofoiling, these rules can probably be changed.

[nine_k]

But during the transition to the hydrofoil mode and back they produce a lot of waves and wake; seen this many times firsthand.