Hi,
Here are some definitions for "marina"
Merriam-Webster: a dock or basin providing secure moorings for pleasure boats and often offering supply, repair, and other facilitiesCambridge:
a small port that is used for pleasure rather than trade, often with hotels, restaurants and barsOxford:
a specially designed harbour with moorings for pleasure yachts and small boats.Wikipedia:
A marina is a harbor with wharfs keeping boats and yachts and with services for recreational boating. A marina may have refueling, washing and repair facilities, ship chandlers, stores and restaurants.So, I understand this is a
marina (it's my hometown, in case you are wondering

)

But how about these ones? There's no dock, no stone quay to protect the pleasure crafts.

(try hard to spot the pier on the right-hand side of the small peninsula)

Structures like these are scattered along part of the coast of my island and are in place throughout the year; people pay to moor their boats there, and the boats can stay there for long periods.
They are not like the one below, which only serves to let people get off the boat:
(missing image)
I assume those in pics #2 and #3 are not "
marinas" ... but, do you have a term for them? I was thinking of something like "
ports for the recreational craft sector" but maybe you wouldn't call them "
ports/harbours" in the first place!
Help, please!
