Close-up challenge

[motorbiking]

No - I would say the green window is about 3mm

 

[Justin Passing]

Overboard alarm?

 

[Stivino]

Normally yellow cylinders are associated with chlorine, is it that?

 

[freddiemercurystwin]

life jacket inflator?

 

[Justin Passing]

Lifejacket pressurizing doobrie

 

[Justin Passing]

Go it

 

[Justin Passing]

Take it it you like FMT

 

[freddiemercurystwin]

No thanks you take it.

 

[motorbiking]

Correct. Hydrostatic Lifejacket inflator

 

[Justin Passing]

No thanks you take it.

Bugger.
OK then: A bit different. You have to get all the words

 

[Justin Passing]

It says
"T'S FL".

Hint - zoom out a bit.

 

[Justin Passing]

Clue:

 

[Justin Passing]

The next letter to the left is O so it's

OT'S FL

 

[Justin Passing]

OT's FLY

 

[Lazzy]

OT's FLY

Where you seeing these other letters ?