Yamato main gun ammo blast radius?

Matrix Games Forums

Forums Register Login Photo Gallery Member List Search Calendars FAQ

My Profile Inbox Address Book My Subscription My Forums Log Out

Yamato main gun ammo blast radius?

View related threads: (in this forum | in all forums)

Logged in as: Guest

Users viewing this topic: none

Printable Version

All Forums >> [New Releases from Matrix Games] >> War in the Pacific: Admiral's Edition >> Yamato main gun ammo blast radius?

Page: [1]

Message

<< Older Topic Newer Topic >>

Yamato main gun ammo blast radius? - 8/6/2015 8:05:14 AM

pelthunter

Posts: 84
Joined: 2/14/2011
Status: offline

Anyone have guesstimate of 460mm main gun Type 0 HE ammo blast radius.

Just asking because unfortunate AI controlled PG Sacramento stumbled into my Yamato group and got blasted at 1.000 yards with several direct hits.

Post #: 1

RE: Yamato main gun ammo blast radius? - 8/6/2015 11:41:06 AM

wegman58

Posts: 460
Joined: 12/28/2013
From: Edina, MN (FROM the Bronx)
Status: offline

I went to my best source for WW II guns and found a lot of stuff, just not what you were looking for.

Some may find this interesting (and a lot more have probably been to the page)

http://www.navweaps.com/Weapons/WNJAP_18-45_t94.htm

www.navweaps.com has a LOT of good stuff.

(in reply to pelthunter)

Post #: 2

RE: Yamato main gun ammo blast radius? - 8/6/2015 1:21:58 PM

Trugrit

Posts: 947
Joined: 7/14/2014
From: North Carolina
Status: offline

My guess is that since the 46 cm is approximately the same size as an 18 inch gun (18.1 inch); at 1,000 yards the projectile is going to go completely through the Sacramento and explode somewhere on the other side, if the ship is firing an AP projectile.

For comparison:
A 16� AP projectile can penetrate 30 feet of solid concrete.
The projectile travels three times the speed of sound.

As for blast radius of a 16� HC:
�The High Capacity (HC) shell can create a crater 50 feet wide and 20 feet deep (15 x 6 m). During her deployment off Vietnam, USS New Jersey (BB-62) occasionally fired a single HC round into the jungle and so created a helicopter landing zone 200 yards (180 m) in diameter and defoliated trees for 300 yards (270 m) beyond that.�

http://www.navweaps.com/Weapons/WNUS_16-50_mk7.htm
http://framework.latimes.com/2012/05/16/battleships-16-inch-shells/

If you are interested in the gun operation here is a training video:
https://www.youtube.com/watch?v=0OmOQs0ziSU#t=75

This is a picture I took on the USS North Carolina last visit:

Attachment (1)

< Message edited by Trugrit -- 8/6/2015 2:23:49 PM >

(in reply to pelthunter)

Post #: 3

RE: Yamato main gun ammo blast radius? - 8/6/2015 3:32:16 PM

dr.hal

Posts: 3335
Joined: 6/3/2006
From: Covington LA via Montreal!
Status: offline

Are you sure the Sacramento was hit by the 18.1 inch guns? Normally the secondary armament, I believe in this case 6 inch guns, would be deployed for this target as the 18.1 inch gun ammo is very limited.

_____________________________

(in reply to Trugrit)

Post #: 4

RE: Yamato main gun ammo blast radius? - 8/7/2015 7:46:12 AM

Chris21wen

Posts: 6249
Joined: 1/17/2002
From: Cottesmore, Rutland
Status: offline

Could it actually be fired at such a small target (any target) at a 1000yds?

(in reply to dr.hal)

Post #: 5

RE: Yamato main gun ammo blast radius? - 8/7/2015 9:51:18 AM

pelthunter

Posts: 84
Joined: 2/14/2011
Status: offline

Yamato battlegroup fueling in a remote port... PG Sacramento stumbles in during the night...

"MURICAN BATTLESHIP FIRE FIRE"...

46cm shell hits PG Sacramento. At least 3 hits with 460mm.

*MASSIVE EXPLOSIVE DAMAGE*

PG Sacramento sinks.

*snif*

(in reply to dr.hal)

Post #: 6

RE: Yamato main gun ammo blast radius? - 8/7/2015 12:19:18 PM

PaxMondo

Posts: 9750
Joined: 6/6/2008
Status: offline

Not respecting RL, in game I rarely see secondary guns used on BB's. Main guns are used almost exclusively, particularly for bombardments. I've tested various ranges with consistent effect. Prolly just my luck, but that's what I have seen.

So, OP's results are very much what I would expect to see ... main guns used at any distance.

_____________________________

Pax

(in reply to pelthunter)

Post #: 7

RE: Yamato main gun ammo blast radius? - 8/7/2015 12:27:40 PM

Alfred

Posts: 6685
Joined: 9/28/2006
Status: offline

This thread is a timely reminder of the loss to the forum of not having either Don Bowen or Symon participating anymore as they could quickly provide an accurate answer.

My view is that the issue of blast radius is not taken into account by the code in determining which weapons fire. Just as radar is not taken into account for the opening salvos as no weapon commences firing before the Mark I eyeball gets a fix, it is just part of the abstraction. The damage potential and range of a weapon is however taken into account by the reasonably sophisticated ballistics model.

Alfred

(in reply to pelthunter)

Post #: 8

RE: Yamato main gun ammo blast radius? - 8/7/2015 3:57:42 PM

Chickenboy

Posts: 24520
Joined: 6/29/2002
From: San Antonio, TX
Status: offline

quote:

ORIGINAL: pelthunter

Anyone have guesstimate of 460mm main gun Type 0 HE ammo blast radius.

I'd check this site. It rates the blast effect as 26 / +5. The Gorn gets most of his information from here.

http://kancolle.wikia.com/wiki/46cm_Triple_Gun_Mount

Attachment (1)

< Message edited by Chickenboy -- 8/7/2015 4:58:06 PM >

_____________________________

(in reply to pelthunter)

Post #: 9

RE: Yamato main gun ammo blast radius? - 8/7/2015 4:04:59 PM

Chickenboy

Posts: 24520
Joined: 6/29/2002
From: San Antonio, TX
Status: offline

Unexpected find while searching on this topic:

A photographed explosion of the AA ammunition (San-shiki dan) of the 46cm gun.

https://commons.wikimedia.org/wiki/Category:40_cm/45_Type_94_naval_gun#/media/File:San-shiki_dan_explosion.jpg

Attachment (1)

< Message edited by Chickenboy -- 8/7/2015 5:05:56 PM >

_____________________________

(in reply to Chickenboy)

Post #: 10

RE: Yamato main gun ammo blast radius? - 8/7/2015 5:36:27 PM

Shark7

Posts: 7937
Joined: 7/24/2007
From: The Big Nowhere
Status: offline

quote:

ORIGINAL: PaxMondo

Not respecting RL, in game I rarely see secondary guns used on BB's. Main guns are used almost exclusively, particularly for bombardments. I've tested various ranges with consistent effect. Prolly just my luck, but that's what I have seen.

So, OP's results are very much what I would expect to see ... main guns used at any distance.

I'm just the opposite. Main guns rarely register a hit, but the secondaries get about 15 hits per every single primary hit.

Of course I've also noticed that there tend to be 'bands' where the guns hit more often. For the smaller guns, that range is point blank 1000-2000 yds and between 6000-9000 yds. For the big guns, it tends to run between 2000-4000 yds and 8000-12000 yards.

With two of us getting different results, I'd have to assume its a matter of the RNG and how it operates on different systems.

_____________________________

Distant Worlds Fan

'When in doubt...attack!'

(in reply to PaxMondo)

Post #: 11

RE: Yamato main gun ammo blast radius? - 8/7/2015 6:17:04 PM

nashvillen

Posts: 3836
Joined: 7/3/2006
From: Christiana, TN
Status: offline

My Yamato once sunk a PT boat with 46cm ammo. The round probably cost more than the boat. And, just the kinetic energy of the AP round hitting the plywood boat would be enough to make splinters of it. Had to pull up a very large AKE to Truk to re-arm... Stupid PT boats.

Nice images CB!

_____________________________

(in reply to Shark7)

Post #: 12

RE: Yamato main gun ammo blast radius? - 8/8/2015 12:23:41 AM

PaxMondo

Posts: 9750
Joined: 6/6/2008
Status: offline

quote:

ORIGINAL: Shark7

quote:

ORIGINAL: PaxMondo

Not respecting RL, in game I rarely see secondary guns used on BB's. Main guns are used almost exclusively, particularly for bombardments. I've tested various ranges with consistent effect. Prolly just my luck, but that's what I have seen.

So, OP's results are very much what I would expect to see ... main guns used at any distance.

I'm just the opposite. Main guns rarely register a hit, but the secondaries get about 15 hits per every single primary hit.

Of course I've also noticed that there tend to be 'bands' where the guns hit more often. For the smaller guns, that range is point blank 1000-2000 yds and between 6000-9000 yds. For the big guns, it tends to run between 2000-4000 yds and 8000-12000 yards.

With two of us getting different results, I'd have to assume its a matter of the RNG and how it operates on different systems.

I need new dice ... where are those 20D anyway?

_____________________________

Pax

(in reply to Shark7)

Post #: 13

RE: Yamato main gun ammo blast radius? - 8/10/2015 11:03:04 PM

rustysi

Posts: 7472
Joined: 2/21/2012
From: LI, NY
Status: offline

quote:

ORIGINAL: PaxMondo

Not respecting RL, in game I rarely see secondary guns used on BB's. Main guns are used almost exclusively, particularly for bombardments. I've tested various ranges with consistent effect. Prolly just my luck, but that's what I have seen.

So, OP's results are very much what I would expect to see ... main guns used at any distance.

I see secondaries firing all the time. Even the sponson mounted units on Japanese BB's. Of course during bombardments range could affect this, and I typically set mine at ~60% of the range of the shortest range weapon that I wish to fire. IOW if I want the 12.7cm's to fire range is set to 12k.

_____________________________

It is seldom that liberty of any kind is lost all at once. Hume

In every party there is one member who by his all-too-devout pronouncement of the party principles provokes the others to apostasy. Nietzsche

Cave ab homine unius libri. Ltn Prvb

(in reply to PaxMondo)

Post #: 14