US Navy question

[FASTBOAT TOUGH]

I've had a very busy day today so I didn't have a chance to check this but, the USN is also still using the 5 inch gun currently both the MK 45 Mod 2 5/54 & MK 45 Mod 4 5/62 inch guns. The MK45 Mod 0 entered service in 1971 with the later Mod 4 gun developed for better shore fire support. There has been some confusion about this when the 76mm (3 inch) guns came into use. Generally the single mount guns are on the DDG 51 & CG 47 Class ships the latter with 2 mounts. The newer ships in each class carry the Mod 4 5/62 guns. The magazine load is 600Rds conventional with an ROF of 16-20Rds per minute in auto mode.
http://www.navy.mil/navydata/fact_di...0&tid=575&ct=2

Pics:

DDG-51


CG-47

Wouldn't be nice to use more ship pictures where we can; just a thought.

In the spirit of the season; my favorite sea command the USS PROVIDENCE SSN-719 at the North Pole to mark the 50th anniversary of the USS NAUTILUS SSN-571 journey as the first submarine to go under the Pole fully submerged. The boat had a visitor back to his normal weight awhile after his Christmas run.
Attachment 13357

Regards,
Pat

[FASTBOAT TOUGH]

Here's the last picture; it didn't upload properly and the "clock" ran out.


Regards,
Pat

[DRG]

Originally Posted by FASTBOAT TOUGH

....... the USN is also still using the 5 inch gun currently both the MK 45 Mod 2 5/54 & MK 45 Mod 4 5/62 inch guns. Regards,
Pat

Unit 162 US OOB goes to 2020 but Unit 162 in the USMC OOB didn't until 3 minutes ago......

Don

[Suhiir]

Originally Posted by FASTBOAT TOUGH

Generally the single mount guns are on the DDG 51 & CG 47 Class ships the latter with 2 mounts.

Currently we have:

5in Naval Gun A (1946-1975) triple mount, ROF=7, Rng=210
5in Naval Gun B (1976-2011) dual mount, ROF=8, Rng=215
6.1in AGS NG (2012-2020) triple mount, ROF=6, Rng=218

Background Data:

5"/45 Mk 45 Mod 0 thru 2 (available 1971)

5"/62 Mk 45 Mod 4 (available 2000)
Starting with DDG 81, 5"/62 Mk 45 Mod 4 is being forward-fit to U.S. Navy DDG 51 Class destroyers. Other Mod 4 applications include installations for the fleets of South Korea, Japan and Denmark.

6.1in/62 AGS (available not as of 2014)

Defense News reported in a 22 July 2008 article that the USN appears ready to halt the DDG-1000 program at only two ships - which was already down from the originally planned 32 ships - and to instead build eight to eleven up-rated Arleigh Burke DDG-51 class destroyers, construction of which had been slated to end in 2012. The same article states that the Navy is investigating using the SPY-3 radar system and the AGS gun on these new DDG-51 destroyers.

So I'd propose:

5in Naval Gun A (1946-1970) triple mount, ROF=7, Rng=210
5in Naval Gun B (1971-1999) dual mount, ROF=8, Rng=215
5in Naval Gun C (2000-2020) dual mount, ROF=8, Rng=218 (replacing the 6.1in AGS)

[FASTBOAT TOUGH]

You both are ahead of me with the naval gun issue on the whole, but if the USN cites the minimum ROF Per Minute in auto (loader) mode at 16 and maximum ROF Per Minute in auto mode at 20; shouldn't the proposed ROF be higher then 8?
Again the technical issues of the game I leave to folks like you guys for these kind of issues. I understand the hard data submitted has to work within the turn/game clock to reach the final sum of all.
I suspect the difference/range (16-20 ROF) stated by the USN ref. submitted is the difference between the MK45 Mod 2 and
MK45 Mod 4

Below it's noted that the USN is using an extended (20NM) range cargo round on the MK45 Mod 4 gun. Also noted is that South Korea, Japan and Denmark are using the same gun. It is likely they probably used the earlier Mod 2 and possibly 0 as well as these guns can be both upgraded to the Mod 4 configuration.
http://www.baesystems.com/product/BA...%3Dsmuhwe0nh_4

The next two come from the Naval Weapons SYSCOM what's useful is the country user data in the second note Britain's choice 45 Class destroyers, those a 4.5" gun.
http://www.navweaps.com/Weapons/WNUS_5-54_mk45.htm
http://weaps.com/Weapons/WNUS_5-62_mk45.htm

Highlighted data provides links to the other guns noted.

I've done enough "damage" for now so...Thanks for taking this on.

Now back too issues at work, transition issues/new contractor to deal with; hopefully winding down.

Regards,
Pat

[FASTBOAT TOUGH]

A better second Ref. from NAVWEASYSCOM one above was broke when I checked and of course the edit clock ran out on me. To my UK friends I apologize, that would correctly be the TYPE 45 Destroyers, I have both known and worked with members mostly of the Submarine community and I have a deep respect for their character and professionalism. And I learned that beyond "social" drinking to never challenge them to "drinking games/or contests" even at their invitation !
http://www.navweaps.com/Weapons/WNUS_5-62_mk45.htm

Again links highlighted.

Regards,
Pat