Would you like to calculate speed by prop turns?

kv29 · 07-04-07, 07:38 PM

I was reading an online TDC manual and in some chapter it said that you could calculate a ship speed by counting the props rpm. Skippers had a recognition manual named ONI 41-42 in which every ship had the max speed & rpm, so using the sonar we can do the same by simple math.

I was thinking about doing a table like this with a default timeframe of 10 seconds:

I´ve checked a couple of ships and it works ok.
What do you think?

ReallyDedPoet · 07-04-07, 07:47 PM

If you are talking about the color, it is to the right of the font type.

RDP

kv29 · 07-04-07, 08:06 PM

Edit: fixed!

For those who don´t understand, lets say you spotted a Horai Maru ship, so you go to the sonar and start the clock and count the target prop turns for 10 seconds. If you counted 7 turns, the target speed would be 5 knots according to the table.

tater · 07-04-07, 08:42 PM

ONI 41-42 is WARSHIPS only.

The merchant manual, ONI 208-J is pretty hit or mis on RPM @ knots data. It might also be wrong.

I'd tend to take the values, and randomized them +- some %.

tater

kv29 · 07-04-07, 08:46 PM

tater you are right about ONI, but Im taking the data from the ships sim files, so I suppose they are accurate,

tater · 07-04-07, 10:21 PM

I just meant that if you did it, you might want to have less accurate info for merchants

Fog of war, etc.

<S>

tater

kv29 · 07-05-07, 07:23 AM

tater, do you have any of those ONI in your library?
I want to confirm some RPM numbers if you don´t mind.

tater · 07-05-07, 08:11 AM

I have ONI 41-42 and 208-J (revised) as well as 208-J supp.

Fire away! (you should use the real ONI values even if they are wrong, lol)

kv29 · 07-05-07, 08:20 AM

Lets start with the merchants....:p

Conte Verde

Horai Maru

Kiturin Maru

Tyohei Maru

Nippon Maru

Buzyun Maru

Haruna Maru

Nagara Maru

Hakusika Maru

Zinbu Maru

Heito Maru

Kinposan Maru

Akita Maru

Biyo Maru

Taihosan Maru

Kasagisan Maru

tater · 07-05-07, 09:39 AM

Quote:

Originally Posted by kv29

Conte Verde

No data in the listing for her.

Quote:

Horai Maru

No RPM numbers for her, either.

Quote:

Kiturin Maru

No RPM numbers (sad, there are ships all around these in the book with RPMs given).

Quote:

Tyohei Maru

No RPM data listed.

Quote:

Nippon Maru

118 @ 17.5
125 @ 20.5 (wow, it is FUBAR on speed in the game)

Quote:

Buzyun Maru

No RPM data listed.

Quote:

Haruna Maru

No RPM data listed.

Quote:

Nagara Maru

98 @ 15 knots
116 @ 18.6 knots (! fast)

Quote:

Hakusika Maru

No RPM data listed.

Quote:

Zinbu Maru

No RPM data listed.

Quote:

Heito Maru

No RPM data.

Quote:

Kinposan Maru

82 @ 12.5 knots

Quote:

Akita Maru

86 @ 13.5 knots

Quote:

Biyo Maru

No RPM data listed.

Quote:

Taihosan Maru

No RPM data listed.

Quote:

Kasagisan Maru

85 @ 10 knots

kv29 · 07-05-07, 11:09 AM

uuppss, a lot of data was missing in rl. I suppose that using my table would be something like cheating. I think I´ll drop it.

tater · 07-05-07, 01:12 PM

I dunno, put it in for the few ships that had data, and people can always guess. Guessing is good. The other plus is that it'll be less work

BTW, very ship you listed is pictured in the ONI 208-J guide, they just don't have RPMs @ speed listed for many.

tater

Rockin Robbins · 07-06-07, 04:18 AM

Don't think it's just you eggheads that swap arcane information that are interested in calculating speed from RPM. Realism-wise, it would be good to get players to their sonar stations doing useful work, no? I agree that only information actually available in WWII to our skippers should be available, even if it was wrong. It is now a double shame that floating objects were not implemented in SH4 as they were in SH3. But rather than complaining about what might have been I'm having a great time with what is. Thanks for both of you and the time you've put into making Wolves the best it can be!

kv29 · 07-06-07, 07:43 AM

well, more than a half of the merchants have missing info, I wonder if the warship ONI suffers from the same thing. tater?

tater · 07-06-07, 08:12 AM

I'll get back to you in a bit on warships.

07-04-07, 07:38 PM	#1
kv29 Watch Officer Join Date: May 2007 Location: Buenos Aires Posts: 342 Downloads: 2 Uploads: 0	Would you like to calculate speed by prop turns? I was reading an online TDC manual and in some chapter it said that you could calculate a ship speed by counting the props rpm. Skippers had a recognition manual named ONI 41-42 in which every ship had the max speed & rpm, so using the sonar we can do the same by simple math. I was thinking about doing a table like this with a default timeframe of 10 seconds: I´ve checked a couple of ships and it works ok. What do you think? Last edited by kv29; 07-04-07 at 08:18 PM.

07-04-07, 07:47 PM	#2
ReallyDedPoet Canadian Wolf Join Date: Jul 2006 Location: Canada. The one and only, East Coast Posts: 10,888 Downloads: 946 Uploads: 5	If you are talking about the color, it is to the right of the font type. RDP __________________ Back in the Day

07-04-07, 08:06 PM	#3
kv29 Watch Officer Join Date: May 2007 Location: Buenos Aires Posts: 342 Downloads: 2 Uploads: 0	Edit: fixed! For those who don´t understand, lets say you spotted a Horai Maru ship, so you go to the sonar and start the clock and count the target prop turns for 10 seconds. If you counted 7 turns, the target speed would be 5 knots according to the table. Last edited by kv29; 07-04-07 at 08:25 PM.

07-06-07, 04:18 AM	#13
Rockin Robbins Navy Seal Join Date: Mar 2007 Location: DeLand, FL Posts: 8,900 Downloads: 135 Uploads: 52	Yes, I would! Don't think it's just you eggheads that swap arcane information that are interested in calculating speed from RPM. Realism-wise, it would be good to get players to their sonar stations doing useful work, no? I agree that only information actually available in WWII to our skippers should be available, even if it was wrong. It is now a double shame that floating objects were not implemented in SH4 as they were in SH3. But rather than complaining about what might have been I'm having a great time with what is. Thanks for both of you and the time you've put into making Wolves the best it can be! __________________ Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS

07-04-07, 08:42 PM	#4
tater Navy Seal Join Date: Mar 2007 Location: New Mexico, USA Posts: 9,023 Downloads: 8 Uploads: 2	ONI 41-42 is WARSHIPS only. The merchant manual, ONI 208-J is pretty hit or mis on RPM @ knots data. It might also be wrong. I'd tend to take the values, and randomized them +- some %. tater

07-04-07, 08:46 PM	#5
kv29 Watch Officer Join Date: May 2007 Location: Buenos Aires Posts: 342 Downloads: 2 Uploads: 0	tater you are right about ONI, but Im taking the data from the ships sim files, so I suppose they are accurate,

07-04-07, 10:21 PM	#6
tater Navy Seal Join Date: Mar 2007 Location: New Mexico, USA Posts: 9,023 Downloads: 8 Uploads: 2	I just meant that if you did it, you might want to have less accurate info for merchants Fog of war, etc. <S> tater

07-05-07, 07:23 AM	#7
kv29 Watch Officer Join Date: May 2007 Location: Buenos Aires Posts: 342 Downloads: 2 Uploads: 0	tater, do you have any of those ONI in your library? I want to confirm some RPM numbers if you don´t mind.

07-05-07, 08:11 AM	#8
tater Navy Seal Join Date: Mar 2007 Location: New Mexico, USA Posts: 9,023 Downloads: 8 Uploads: 2	I have ONI 41-42 and 208-J (revised) as well as 208-J supp. Fire away! (you should use the real ONI values even if they are wrong, lol)

07-05-07, 08:20 AM	#9
kv29 Watch Officer Join Date: May 2007 Location: Buenos Aires Posts: 342 Downloads: 2 Uploads: 0	Lets start with the merchants....:p Conte Verde Horai Maru Kiturin Maru Tyohei Maru Nippon Maru Buzyun Maru Haruna Maru Nagara Maru Hakusika Maru Zinbu Maru Heito Maru Kinposan Maru Akita Maru Biyo Maru Taihosan Maru Kasagisan Maru

07-05-07, 11:09 AM	#11
kv29 Watch Officer Join Date: May 2007 Location: Buenos Aires Posts: 342 Downloads: 2 Uploads: 0	uuppss, a lot of data was missing in rl. I suppose that using my table would be something like cheating. I think I´ll drop it.

07-05-07, 01:12 PM	#12
tater Navy Seal Join Date: Mar 2007 Location: New Mexico, USA Posts: 9,023 Downloads: 8 Uploads: 2	I dunno, put it in for the few ships that had data, and people can always guess. Guessing is good. The other plus is that it'll be less work BTW, very ship you listed is pictured in the ONI 208-J guide, they just don't have RPMs @ speed listed for many. tater

07-06-07, 07:43 AM	#14
kv29 Watch Officer Join Date: May 2007 Location: Buenos Aires Posts: 342 Downloads: 2 Uploads: 0	well, more than a half of the merchants have missing info, I wonder if the warship ONI suffers from the same thing. tater?

07-06-07, 08:12 AM	#15
tater Navy Seal Join Date: Mar 2007 Location: New Mexico, USA Posts: 9,023 Downloads: 8 Uploads: 2	I'll get back to you in a bit on warships.