Search found 14 matches

by ric_roc
Tue May 31, 2016 2:41 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

I have published an iPad Naval simulation on Apple App Store yesterday, the name is DKM Graf Spee and the current scenarios are: Scenario #1 - Rio De Plata - 13 Dec, 1939 6:10 am This is the historical scenario, 6:10am the DKM Graf Spee attack a British Cruiser squadron consisting of HMS Exeter (hea...
by ric_roc
Wed Jul 08, 2015 3:58 am
Forum: Naval History (1922-1945)
Topic: River Plate: conflicting track charts
Replies: 34
Views: 23661

Re: River Plate: conflicting track charts

The available British plots of the River Plate engagement are hand drawn sketches, those do not seems to be be "official" Admiralty document but witness accounts. Question 1: British Battleship and Battlecruisers were fitted with a plotting table in the Director Control Room, was it the sa...
by ric_roc
Wed Apr 08, 2015 2:49 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

Based on the accounts of the battle, the Graf Spee scored rapidly on the HMS Exeter at long distance, then the quality of AGS firing has been degraded: - AGS evasive steering - Stress of being under fire, ( practice shooting at the range is always much more accurate! ) I am adjusting the parameters ...
by ric_roc
Tue Apr 07, 2015 3:53 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

Dave,
thanks for the info on the german ORF, it is much better that what I have in the model and I will "upgrade" in my next release! It is not exactly a surprise due to the quality of the german optic industry.
Best regards,
Ric roc
by ric_roc
Tue Apr 07, 2015 3:39 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

For comparison I added top view of:
MN Algerie
DKM Graf Spee
HMS Exeter
That explain the staying power of the 2 French CA
by ric_roc
Tue Apr 07, 2015 3:31 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

Simulation run #2 17:00 DKM Graf Spee discover french Cruisers in the NE, it goes on starboard at 100 increase the speed. It is early in the DKM Graf Spee cruise, max speed is 26kn. 17:01 The french Cruisers picked up the dark smoke of the DKM Graf Spee engines on SW and power up to full speed on 17...
by ric_roc
Tue Apr 07, 2015 2:59 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

There was a question whether the 150mm did open fire, as it was under IA control I did go back to the log files:

The 150mm opened fire at 17:13 (distance to target 18.66km). They only scored one hit. They were under local OFC!

Best Regards,
Ric Roc
by ric_roc
Tue Apr 07, 2015 2:47 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

Thanks for the feedbacks! I discounted the Radar firing control for the AGS based on Eric Grove's book (page 12), in a nutshell the "Seetakt" a 60 cm FuMG38G was effective to 15 km with not a sufficient bearing accuracy, the stereoscopic rangefinder was superior in bright hi-visibility con...
by ric_roc
Mon Apr 06, 2015 4:49 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

Result of 1st simulation: 16:55 MN Algerie and MN Dupleix are sailing in “ligne de bataille” on 150 at 16 knots 17:00 The French "ligne de bataille” and DKM Graf Spee are making visual contact (distance ~28km), DKM Graf Spee is cruising on 90 at 14knots. The French line of battle accelerate tow...
by ric_roc
Sat Mar 28, 2015 10:14 pm
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

I am trying a different scenario than the Battle of River Plate, it is based on the Chapter 10 of "French Cruisers 1922 - 1956" from John Jordan and Jean Moulin. 17:00 pm the 27 October 1939 27°W 6°N French Cruisers Algérie and Dupleix sailing on 160° sight the pocket battleship on 240° at...
by ric_roc
Wed Mar 18, 2015 4:46 am
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

Thanks, The german map of the engagement is in Eric Grove's book but very difficult to read. The copy on the thread will help me a lot to validate the german side. It seems that a more accurate account would be a mix of the German account for the Graf Spee and the British account for the Royal Navy....
by ric_roc
Sat Mar 14, 2015 1:29 pm
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee trying to escape back to Germany...
Replies: 158
Views: 58856

Re: Graf Spee trying to escape back to Germany...

I am trying to reconstitute the River Plate engagement minute by minute based on the 2 following sources:Sources: Sources: Pope, 1956, “The Battle of the River Plate” Grove, 2000, “The Price of Disobedience” The Battle of the River Plate reconsidered If you have additional sources please let me know...
by ric_roc
Tue Mar 10, 2015 3:57 am
Forum: Announcements, News and Updates
Topic: Presentation
Replies: 18
Views: 38170

Re: Presentation

Good Evening,
I am a Texan of french origin (Breton!) I am a passionate sailor, and when I am not on the water my hobby is history and particularly naval history. I have been programming naval simulation since the 80s (Amstrad Turbo Pascal) based on Dr Paul Bois "Amiraute".