Using ship fuel as aviation fuel?

KDR wrote:

Many thanks for all the replies. Compared with F-76, how expensive is
JP-5?

http://www.sd.fisc.navy.mil/FUEL/FUEL-INFOR-PAGE.HTML

JP-5 $1.03/gallon
DFM $0.98/gallon (DFM is Diesel fuel, Marine, another term for F-76)

That's roughly 5% difference. It may not seem like much, but considering
the Navy's overall fuels budget, it can really add up.


Is there any official move in the RN or USN to adopt JP-5 as a
single universal fuel?

Not that I've ever heard of.

--
Tom Schoene Replace "invalid" with "net" to e-mail
"Our country, right or wrong. When right, to be kept right, when
wrong to be put right." - Senator Carl Schurz, 1872

On Wed, 21 Apr 2004 01:46:47 GMT, "Thomas Schoene"
wrote:

KDR wrote:

Many thanks for all the replies. Compared with F-76, how expensive is
JP-5?

http://www.sd.fisc.navy.mil/FUEL/FUEL-INFOR-PAGE.HTML

JP-5 $1.03/gallon
DFM $0.98/gallon (DFM is Diesel fuel, Marine, another term for F-76)

That's roughly 5% difference. It may not seem like much, but considering
the Navy's overall fuels budget, it can really add up.


Is there any official move in the RN or USN to adopt JP-5 as a
single universal fuel?

Not that I've ever heard of.

As long ago as 1960, my Diesel-powered ship made a NATO exercise and
was refueled during the exercise with JP-5 (the oilers were carrying
no Diesel fuel). I believe the fuel comsumption was slightly worse.
I don't know the long-term effects on the Diesel engines, as JP-5 is
missing some lubricant as compared to JP-5, I understand. This was
just one two-month exercise, of course, but the matter was being
considered even then.

Do modern gas turbine powered ships use Diesel fuel, or is there yet
another formulation of fuel for them?

In article . net, "Thomas
Schoene" wrote:

KDR wrote:

Many thanks for all the replies. Compared with F-76, how expensive is
JP-5?

http://www.sd.fisc.navy.mil/FUEL/FUEL-INFOR-PAGE.HTML

JP-5 $1.03/gallon
DFM $0.98/gallon (DFM is Diesel fuel, Marine, another term for F-76)

In the tutorial URL I posted, they made a definite distinction between
F-76 and DFM.


That's roughly 5% difference. It may not seem like much, but considering
the Navy's overall fuels budget, it can really add up.

That's $500 for a 10K gallon fill up. Substantial enough savings.
Anyone know how much fuel a DDG takes on at a time?


Is there any official move in the RN or USN to adopt JP-5 as a
single universal fuel?

Not that I've ever heard of.

Just proposals.

--
Harry Andreas
Engineering raconteur

Harry Andreas wrote:
In article . net,
"Thomas Schoene" wrote:
JP-5 $1.03/gallon
DFM $0.98/gallon (DFM is Diesel fuel, Marine, another term
for F-76)

In the tutorial URL I posted, they made a definite distinction between
F-76 and DFM.

No, they made a distinction between F-76 and *commercial* marine distillate
fuel. Commercial fuel can be all over the map quality-wise.

The term "DFM" is used throughout the Navy as a synonym for F-76 (the NATO
supply code for the same fuel). Technically, it seems that DFM might not be
specific enough, as F-76 implies conformance to a specific MIL-SPEC while
DFM does not. But the two terms seem to be interchangable in everyday use.

For example:

www.msc.navy.mil/instructions/doc/35007b.doc
"Ships requiring DFM (NATO Symbol F-76) may be accomplished via barge or
ship."

http://www.nor.fisc.navy.mil/home/Su.../18APR03SC.pdf
"Zuiderkruis took on 19,000 barrels of diesel fuel marine (DFM/F-76)..."

http://www.jiatfs.southcom.mil/j4/Ma...PuertoRico.doc
"(U) Fuel. DFM (F-76) and JP-5 (F-44) available."


That's roughly 5% difference. It may not seem like much, but
considering the Navy's overall fuels budget, it can really add up.

That's $500 for a 10K gallon fill up. Substantial enough savings.
Anyone know how much fuel a DDG takes on at a time?

From a quick search, an UNREP of 150,000 gallons would seem to be typical.

I figure a destroyer's total capacity is around 500,000 gallons. That's
based on F-76 at 300 gallons per ton and the Combat Fleets figure that a
Spruance carries 1,650 tons of fuel. No fuel figures available for DDGs,
but that's a decent ballpark estimate anyway. Plenty of money to be saved
here.

--
Tom Schoene Replace "invalid" with "net" to e-mail
"Our country, right or wrong. When right, to be kept right, when
wrong to be put right." - Senator Carl Schurz, 1872