That was several old supply boats, They had on average 4-2000 sack
cement tanks arranged inside the hull, with very tight voids, areas you
could only stick an arm thru and spray like mad. In the summers it
would be in the 120 degree range. Worse than having to hand bucket out
the tanks last 60 or so sacks you could not blow out. Don't get me
going about liquid drilling fluid tanks and the work involved there.
Ever hear of black magic?

Joe

"Joe" wrote in news:1139086273.436449.238910
@o13g2000cwo.googlegroups.com:

Nothing worse than maintaining a double hull, sweats, and impossiable
angles to needle gun. We use to suitup in coveralls, go in the voids
with a wash down gun and spray the voids with pure fish oil. What a fun
summer job.

Joe


Double hulls you would talk about for tankers would be coated. The biggest
problem was keeping down the mud buildup as this cost you cargo.

Well yeah... But how long do you think that coating is going to last
15-20 yrs maybe, more like 10 if an excellent job was done in the first
place. The supply boats were coated when new.

Joe

"Joe" wrote in news:1139101562.623510.275140
@g47g2000cwa.googlegroups.com:

Well yeah... But how long do you think that coating is going to last
15-20 yrs maybe, more like 10 if an excellent job was done in the first
place. The supply boats were coated when new.

Joe



Initially, many of these tanks were coated with inorganic zinc .....
mistake, as electrolysis tended to be a problem.
Now tend to be coated with various newer vinyl coatings.
Generally these are well monitored and re-done as needed during yard
periods (blasting)..... cheaper than replacing steel.

otn