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Default A Look At Officer Training In The US Navy and Merchant Marine

On Fri, 25 Aug 2017 07:25:12 -0400, "Mr. Luddite"
wrote:

The evaporators could never keep up with the demand for fresh water so
we were always on water hour rationing while underway. Taking a real
shower became a once in a great while deal.


===

I'm surprised they didn't have reverse osmosis systems, wonder if that
has changed?

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Default A Look At Officer Training In The US Navy and Merchant Marine

On Fri, 25 Aug 2017 08:43:04 -0400, "Mr. Luddite"
wrote:

On 8/25/2017 8:00 AM, wrote:
On Fri, 25 Aug 2017 07:25:12 -0400, "Mr. Luddite"
wrote:

The evaporators could never keep up with the demand for fresh water so
we were always on water hour rationing while underway. Taking a real
shower became a once in a great while deal.


===

I'm surprised they didn't have reverse osmosis systems, wonder if that
has changed?


Don't know what they use now. Both of my sons spent time on larger,
more modern ships and according to them they never had lack of water or
rationing.

My only experience with reverse osmosis was with two smaller systems we
had at one of the houses in Florida. One was in the kitchen that
produced drinking water. Water was blah. The other was a somewhat
larger system near the hanger. It had a 5 gallon storage tank that I
used as a final rinse when washing the cars. The problem with both of
them was that it took forever to replenish the water when the tanks were
empty. Very slow process.



===

You had fresh water systems with no pressure pump. Salt water systems
require much higher pressure and can be engineered to provide just
about any flow rate. My wife and I get by just fine with about 20
gallons a day on average. How many crew on a destroyer?


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Default A Look At Officer Training In The US Navy and Merchant Marine

On Fri, 25 Aug 2017 07:25:12 -0400, "Mr. Luddite"
wrote:

On 8/24/2017 11:12 PM, wrote:
On Thu, 24 Aug 2017 22:07:07 -0400,

wrote:

On Thu, 24 Aug 2017 19:50:57 -0500, Boating All Out
wrote:

What do they use to make bug juice?

===

Bug Juice is any powdered drink like Kool-Aid.


The CG fed us better ;-)



Navy shore commands and the larger ships usually had good food. The
smaller ships like the destroyer escorts I was on didn't have the
storage capacity for a lot of fresh food for longer cruises. We ate
well for the first few days but then it got pretty bad. Most of us
stocked up our lockers with canned food and other treats that didn't
need refrigeration.

The evaporators could never keep up with the demand for fresh water so
we were always on water hour rationing while underway. Taking a real
shower became a once in a great while deal.


We were on a smaller ship than you and we were at sea for 5 weeks at a
time. I am not sure why they couldn't keep you in food. They had huge
"reefers" and lots of dry stores. They generally had fresh eggs for
the whole cruise but they mixed in some powder I am sure.
We also seemed to have enough fresh water. Maybe you just had more
guys on board. We had around 75 on a 311' ship. These things were
originally sea plane tenders so they were all "tank". We carried
enough fuel to sail around the world a couple times and I assume they
had big fresh water tanks. We did have a strict "sea shower" rule but
you could take a salt water shower as long as you wanted.
The trick was you took a long "Hollywood" shower in sea water then did
a quick rinse in fresh.

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Default A Look At Officer Training In The US Navy and Merchant Marine

On Fri, 25 Aug 2017 08:43:04 -0400, "Mr. Luddite"
wrote:

On 8/25/2017 8:00 AM, wrote:
On Fri, 25 Aug 2017 07:25:12 -0400, "Mr. Luddite"
wrote:

The evaporators could never keep up with the demand for fresh water so
we were always on water hour rationing while underway. Taking a real
shower became a once in a great while deal.


===

I'm surprised they didn't have reverse osmosis systems, wonder if that
has changed?


Don't know what they use now. Both of my sons spent time on larger,
more modern ships and according to them they never had lack of water or
rationing.

My only experience with reverse osmosis was with two smaller systems we
had at one of the houses in Florida. One was in the kitchen that
produced drinking water. Water was blah. The other was a somewhat
larger system near the hanger. It had a 5 gallon storage tank that I
used as a final rinse when washing the cars. The problem with both of
them was that it took forever to replenish the water when the tanks were
empty. Very slow process.


It all has to do with the amount of membrane you have and the pressure
you run at. Sanibel and parts of the Cape are on RO systems now but
they are using brackish water from wells, not salt water.
I have a small RO here, just for drinking water and ice makers. It
makes about 8 gallons a day with new membranes and filters. As they
age, that falls off. I get about 2 years out of a membrane and filters
go about 6 months. I did put in a bigger cartridge filter with cheaper
elements in front of the proprietary filters the RO uses. I have
gauges throughout the system so I can monitor the operation.
You can put a booster pump in front of the RO and increase your
output.
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