Shipbucket

Greetings, I have found a strange feature on the hull of Iowa class BBs that I can not find an explanation for. Can anyone identify this feature?

http://dl.dropbox.com/u/79264610/405px- ... peller.png

First thought would be zinks.

_________________
𝐌𝐀𝐓𝐇𝐍𝐄𝐓- 𝑻𝒐 𝑪𝒐𝒈𝒊𝒕𝒂𝒕𝒆 𝒂𝒏𝒅 𝒕𝒐 𝑺𝒐𝒍𝒗𝒆

So, corrosion protection?

timothy's asumption is most likely correct.
that is: the perry has very similar zincs.

without these, magnetic cavitation will be eating the props and hull.

_________________
Drawings are credited with J.Scholtens
I ask of you to prove me wrong. Not say I am wrong, but prove it, because then I will have learned something new.
Shipbucket Wiki admin

yeah that's correct that is zink,

So are those mounted on active ships or decommissioned and mothballed ships?

On all ships

_________________
“Close” only counts with horseshoes, hand grenades, and tactical nuclear weapons.
That which does not kill me has made a grave tactical error

Worklist

Source Materiel is always welcome.

Thank You!

Whenever you have two different metals in a non-neutral solution, you get electrolytic activity that chemically eats away at one or both of the metals. The Zinc is there to sacrificially degrade so that the other, more important bits of metal (like the propeller) doesn't.

_________________
𝐌𝐀𝐓𝐇𝐍𝐄𝐓- 𝑻𝒐 𝑪𝒐𝒈𝒊𝒕𝒂𝒕𝒆 𝒂𝒏𝒅 𝒕𝒐 𝑺𝒐𝒍𝒗𝒆

It is also mounted on Fiberglas boats