HELP! Mid '80s Sea Ray Seville fuel tank openings question

[Panoguy]

Ugg - probably a silly question, but I just can't remember, after 3 years of disassembly!

The 30 gallon under-deck fuel tank that came with my 1984 19-Ft. Sea Ray Seville, has (obviously) a fuel fill opening (on the starboard side), then right next to that is a smaller opening, then off to the port side (farther away from the fill & other opening) is another opening similar to the first small opening.

So, we have 2 openings grouped together (fuel fill & ???), then another opening off to the port side of the tank.

OK - my question... which one is the vent, and which one is the supply to the engine??

 

[Panoguy]

(crickets)... well, I'm going to guess that the fuel supply is the small spigot next to the fill, and the vent is the one by itself, toward the port side. Guess we'll see.

 

[kcassells]

{grasshoppers** Pic would help. But I would gander to say you are correct. I think the vent is 5/8" and the fuel to motor is 3/8". Fill to tank 1.5"
I tried to google that particular tank but there quite a few design variations. Snap a pic and paste it.
Typically fuel is largest, vent next and supply next in sizes.