Are there different names for a pontoon if it is parallel or extending out from the shore?

Here we see the different terminology for wharf, a pier, a jetty and a quay - which all depend on whether they are built on piles or fill; extending out from shore or parallel to shore.

Strangely missing from this is floating platforms - pontoons.

My question is: Are there different names for a pontoon if it is parallel or extending out from the shore?

Solution 1:

Pontoon refers to the floating temporary support—a component—not the full structure as with the others you mention. A pontoon does not require connection to land.

Key here is the means of placement as well as the configuration. Other structures you refer to are not moveable, per se.

Solution 2:

From Wikipedia on "Mulberry Harbours,"
PARALLEL

The "Mulberry" harbours consisted of a floating outer breakwaters called "Bombardons,"

RADIAL

...and floating piers or roadways codenamed "Whales" and "Beetles."

The page refers to but does not name German temporary harbours (e.g. in the Channel Islands)

Solution 3:

A pontoon may be used as a component in a floating pier or floating wharf. A "pontoon", so far as I am familiar with it, is a single floating element which may be used to build a wharf, pier, or bridge (or which may exist on its own, as, say, a diving platform).