S-Boat battery recharge rate

aanker · 12-23-12, 12:05 PM

Regarding torpedo load-out, there were two major classes of S-Boat. Most had no stern tubes however an aft tube was added on some, which would make the total for those boats 14.

The battery recharge time even according to RFB and Ducimus' TMO would be accurate due to the 2 small WWI era engine reason mentioned above.

Happy Hunting!

TorpX · 12-23-12, 07:01 PM

Here is the link:

http://pigboats.com/subs/s-boats.html

Scroll down to the tour of the S-4.

Quote:

Regarding torpedo load-out, there were two major classes of S-Boat. Most had no stern tubes however an aft tube was added on some, which would make the total for those boats 14.

The loadout discussed was for the bow tubes only and the boat had no rear tube.

Quote:

The battery recharge time even according to RFB and Ducimus' TMO would be accurate due to the 2 small WWI era engine reason mentioned above.

I would agree if you were charging fleetboat batteries with S-class engines. The S-class were smaller, slower boats with less machinery, less performance, and smaller crews. They did not need the same battery capacity (in kilowatt hours) of a fleet boat. The batteries would be appropriate to the type of boat.

The total battery capacity for the S-4 was given as 1,240 KWH. I could find any specs for a fleet class, but I would guess it to be at least double that.

Sailor Steve · 12-23-12, 07:46 PM

Thanks.

All the published sources I've seen invariably say 12 torpedoes total, except for the four with the stern tube. The author of that article could be mistaken, or all the published sources could cite one original source, and that was wrong. I've never heard anyone say the four boats with the stern tube carried 16 torpedoes, which would be the case if they could carry fourteen forward.

It would make since to have two full complements of reloads, totalling twelve, but it would also make sense to cram in as many as possible. As far as I can see the bottom line at this point is "I don't know".

No matter what the true answer is, those are some cracking good pictures. Thanks again.

IonicRipper · 12-23-12, 10:01 PM

Steve: According to the picture descriptions of the torpedo room, there seems to be room for 10 torpedo reloads along with 4 already in the tubes. If you look at the 3rd photo of the torpedo room (looking aft) it seems like they could have stored 2 torpedoes on each of the wide struts (a pair just above the floor and another pair about waist high) and one on each of the shorter struts above those. I might, also, be horribly mistaken.

Sailor Steve · 12-23-12, 11:09 PM

I see what you mean, and I don't know how the storage system actually worked, so I can't say one way or the other.

IonicRipper · 12-24-12, 12:56 AM

Found this shot on the same website.

10 reloads + 4 in tubes this time.
I guess the torpedo loadout varied throughout the S-Boats' years.

Funny how this thread deviated from the original subject.

Sailor Steve · 12-24-12, 10:08 AM

I only count eight.

aanker · 12-23-12, 08:22 PM

Interesting..... sorry I missed the topic. My S-Boat records only span SS-123 through SS-159.
- plus, I just now discovered that two of my favorite websites are not up. DANFS & NavSource. I hope that is just temporary.

Frankly it has been a few years since I have been able to get into submarines and SH4. I was exhausted, maybe I still am.

Happy Hunting!

12-23-12, 12:05 PM	#1
aanker Pacific Thunder Join Date: Apr 2004 Location: Yellow Sea Posts: 1,896 Downloads: 236 Uploads: 14	Regarding torpedo load-out, there were two major classes of S-Boat. Most had no stern tubes however an aft tube was added on some, which would make the total for those boats 14. The battery recharge time even according to RFB and Ducimus' TMO would be accurate due to the 2 small WWI era engine reason mentioned above. Happy Hunting! __________________ " Bless those who serve beneath the deep, Through lonely hours their vigil keep. May peace their mission ever be, Protect each one we ask of thee. Bless those at home who wait and pray, For their return by night and day."

12-23-12, 07:46 PM	#3
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	Thanks. All the published sources I've seen invariably say 12 torpedoes total, except for the four with the stern tube. The author of that article could be mistaken, or all the published sources could cite one original source, and that was wrong. I've never heard anyone say the four boats with the stern tube carried 16 torpedoes, which would be the case if they could carry fourteen forward. It would make since to have two full complements of reloads, totalling twelve, but it would also make sense to cram in as many as possible. As far as I can see the bottom line at this point is "I don't know". No matter what the true answer is, those are some cracking good pictures. Thanks again. __________________ “Never do anything you can't take back.” —Rocky Russo

12-23-12, 10:01 PM	#4
IonicRipper Engineer Join Date: Jan 2011 Location: Montreal, Canada Posts: 206 Downloads: 103 Uploads: 0	Steve: According to the picture descriptions of the torpedo room, there seems to be room for 10 torpedo reloads along with 4 already in the tubes. If you look at the 3rd photo of the torpedo room (looking aft) it seems like they could have stored 2 torpedoes on each of the wide struts (a pair just above the floor and another pair about waist high) and one on each of the shorter struts above those. I might, also, be horribly mistaken. __________________ Last edited by IonicRipper; 12-24-12 at 01:00 AM.

12-23-12, 11:09 PM	#5
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	I see what you mean, and I don't know how the storage system actually worked, so I can't say one way or the other. __________________ “Never do anything you can't take back.” —Rocky Russo

12-24-12, 12:56 AM	#6
IonicRipper Engineer Join Date: Jan 2011 Location: Montreal, Canada Posts: 206 Downloads: 103 Uploads: 0	Found this shot on the same website. 10 reloads + 4 in tubes this time. I guess the torpedo loadout varied throughout the S-Boats' years. Funny how this thread deviated from the original subject. __________________

12-24-12, 10:08 AM	#7
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	I only count eight. __________________ “Never do anything you can't take back.” —Rocky Russo

12-23-12, 08:22 PM	#8
aanker Pacific Thunder Join Date: Apr 2004 Location: Yellow Sea Posts: 1,896 Downloads: 236 Uploads: 14	Interesting..... sorry I missed the topic. My S-Boat records only span SS-123 through SS-159. - plus, I just now discovered that two of my favorite websites are not up. DANFS & NavSource. I hope that is just temporary. Frankly it has been a few years since I have been able to get into submarines and SH4. I was exhausted, maybe I still am. Happy Hunting! __________________ " Bless those who serve beneath the deep, Through lonely hours their vigil keep. May peace their mission ever be, Protect each one we ask of thee. Bless those at home who wait and pray, For their return by night and day."

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