Supply ships

Hardigen · 01-15-13, 06:05 AM

Does any skippers know whether the US navy used supply ships during WWII . With over 75% realism being played you have to keep an eye on the fuel,this will be my second time back to Midway ,the first time I barely got there using the fuel and battery at its most economic .I had about 40% fuel left when I turned for home . This time I,ll carry on until 50% is left ,without me having to bite my nails . Good hunting to all Sub skippers H

Arlo · 01-15-13, 08:18 AM

Ahead 2/3.

Hardigen · 01-15-13, 08:41 AM

Thx Arlo will be looking into all of these with relish , Cheers, H

Arlo · 01-15-13, 09:16 AM

Just mentioned because for the longest time I was patroling at ahead standard (figuring logic dictates that as the most efficient speed). Fellow SubSimmers brought the 2/3 setting to my attention as the most fuel efficient. Traveling at 10 knots across the Pacific is a bit of a grind but it does give me the range needed.

Regarding re-supply - I believe there's a mod out there for such. Check the downloads. I'm hesitant to add it, currently. It took me a long time to find a decent mod combo that doesn't crash me. (But I'm tempted)

nikimcbee · 01-15-13, 10:18 AM

Quote:

Originally Posted by Hardigen

Does any skippers know whether the US navy used supply ships during WWII . With over 75% realism being played you have to keep an eye on the fuel,this will be my second time back to Midway ,the first time I barely got there using the fuel and battery at its most economic .I had about 40% fuel left when I turned for home . This time I,ll carry on until 50% is left ,without me having to bite my nails . Good hunting to all Sub skippers H

I want to say no, not like the Germans did. They had sub tenders, but they would have been at the base.

Arlo · 01-15-13, 10:22 AM

http://www.subsim.com/radioroom/down...o=file&id=3539

Sailor Steve · 01-15-13, 10:26 AM

In real life no, the Americans didn't do that. To counter it they had long range and lots of torpedoes. For the Germans resupplying far from home could be done in out-of-the-way places, even though technically in enemy territory. For the Americans the targets were always deep in enemy territory. It would be like a u-boat trying to resupply in the English Channel.

Bilge_Rat · 01-15-13, 10:33 AM

The U.S. Navy did not use supply ships at sea since Fleet Boats were designed with long range in mind.

On the fuel issue, there are game problems, namely:

1. the SH world is flat so many game distances can be as much as 25% farther than in RL;

2. there is a problem with fuel usage, namely ahead standard uses more fuel than in RL and ahead 2/3 uses too little.

Both RFB and TMO try to address this in their own way. Ducimus discusses this in more detail in the TMO manual. As a rule of thumb, I think about heading back to base when I have 35-40% fuel left.

more info here:

http://www.subsim.com/radioroom/show...=196788&page=2

Hardigen · 01-15-13, 03:26 PM

Thanks for info Captains, It absolutely took me ages t get back to Midway ,not knowing whether I,d mek it, I was using slow underwater and 2/3 when surfaced ,and its an hell of a way ,I,ll finish this mission then put TMO on the game . It meks you think how those guys managed ,leaving yourself less than 25% battery in enemy waters is a gamble if you get detected . They must have had guts. My greatest respect to em ! H

BigWalleye · 01-15-13, 03:30 PM

Most references give US fleet boat endurance in terms of nm at 10 knots. At 10 kts, I've found that SH4 fleet boats will exceed their historical range by about 20%. A good compromise would be to run at 12 kts, which gives close to the documented range and cuts transit times by 17%. Whenever you have the time, using the knotmeter to set speed gives you better control than the telegraph.

It's not hard to refine the estimate of when to turn for home. On the nav map, use the compass to draw a circle from the nearest friendly case to your boat. The radius of the circle is your crow-flies distance from base. Based on what lies between you and home, you will want to add to that distance - sometimes a little, sometimes a lot. Then use the "Range at current speed" function to see how much range you have remaining. Like the RT guys, you should always add a "Bingo" (10% of your rated cruising range). After that, it's just a matter of how tight you want to pucker.

Armistead · 01-15-13, 04:49 PM

Most mods like TMO give you tabs to estimate milage at current speed.

ETR3(SS) · 01-15-13, 10:26 AM

Nope. no resupply ships for the USN at sea. The sub tenders were stationed at places like Guam, Midway, etc. Although if I remember correctly the mileage is completely whacked just like the battery discharge rate. I'm currently reading Submarine! by Capt. Edward L. Beach and it mentions boats running full speed to their patrol zones.

01-15-13, 06:05 AM	#1
Hardigen Sparky Join Date: May 2012 Location: Lancashire ,England Posts: 158 Downloads: 165 Uploads: 0	Supply ships Does any skippers know whether the US navy used supply ships during WWII . With over 75% realism being played you have to keep an eye on the fuel,this will be my second time back to Midway ,the first time I barely got there using the fuel and battery at its most economic .I had about 40% fuel left when I turned for home . This time I,ll carry on until 50% is left ,without me having to bite my nails . Good hunting to all Sub skippers H

01-15-13, 08:18 AM	#2
Arlo The Old Man Join Date: Nov 2003 Posts: 1,304 Downloads: 214 Uploads: 0	Ahead 2/3. __________________ -Arlo

01-15-13, 08:41 AM	#3
Hardigen Sparky Join Date: May 2012 Location: Lancashire ,England Posts: 158 Downloads: 165 Uploads: 0	Thx Thx Arlo will be looking into all of these with relish , Cheers, H

01-15-13, 09:16 AM	#4
Arlo The Old Man Join Date: Nov 2003 Posts: 1,304 Downloads: 214 Uploads: 0	Just mentioned because for the longest time I was patroling at ahead standard (figuring logic dictates that as the most efficient speed). Fellow SubSimmers brought the 2/3 setting to my attention as the most fuel efficient. Traveling at 10 knots across the Pacific is a bit of a grind but it does give me the range needed. Regarding re-supply - I believe there's a mod out there for such. Check the downloads. I'm hesitant to add it, currently. It took me a long time to find a decent mod combo that doesn't crash me. (But I'm tempted) __________________ -Arlo

01-15-13, 10:22 AM	#6
Arlo The Old Man Join Date: Nov 2003 Posts: 1,304 Downloads: 214 Uploads: 0	http://www.subsim.com/radioroom/down...o=file&id=3539 __________________ -Arlo

01-15-13, 10:26 AM	#7
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	In real life no, the Americans didn't do that. To counter it they had long range and lots of torpedoes. For the Germans resupplying far from home could be done in out-of-the-way places, even though technically in enemy territory. For the Americans the targets were always deep in enemy territory. It would be like a u-boat trying to resupply in the English Channel. __________________ “Never do anything you can't take back.” —Rocky Russo

01-15-13, 10:33 AM	#8
Bilge_Rat Silent Hunter Join Date: Apr 2002 Location: standing watch... Posts: 3,856 Downloads: 344 Uploads: 0	The U.S. Navy did not use supply ships at sea since Fleet Boats were designed with long range in mind. On the fuel issue, there are game problems, namely: 1. the SH world is flat so many game distances can be as much as 25% farther than in RL; 2. there is a problem with fuel usage, namely ahead standard uses more fuel than in RL and ahead 2/3 uses too little. Both RFB and TMO try to address this in their own way. Ducimus discusses this in more detail in the TMO manual. As a rule of thumb, I think about heading back to base when I have 35-40% fuel left. more info here: http://www.subsim.com/radioroom/show...=196788&page=2 __________________

01-15-13, 03:26 PM	#9
Hardigen Sparky Join Date: May 2012 Location: Lancashire ,England Posts: 158 Downloads: 165 Uploads: 0	Thanks for info Captains, It absolutely took me ages t get back to Midway ,not knowing whether I,d mek it, I was using slow underwater and 2/3 when surfaced ,and its an hell of a way ,I,ll finish this mission then put TMO on the game . It meks you think how those guys managed ,leaving yourself less than 25% battery in enemy waters is a gamble if you get detected . They must have had guts. My greatest respect to em ! H

01-15-13, 03:30 PM	#10
BigWalleye Sea Lord Join Date: Jul 2012 Location: On the Eye-lond, mon! Posts: 1,987 Downloads: 465 Uploads: 0	Most references give US fleet boat endurance in terms of nm at 10 knots. At 10 kts, I've found that SH4 fleet boats will exceed their historical range by about 20%. A good compromise would be to run at 12 kts, which gives close to the documented range and cuts transit times by 17%. Whenever you have the time, using the knotmeter to set speed gives you better control than the telegraph. It's not hard to refine the estimate of when to turn for home. On the nav map, use the compass to draw a circle from the nearest friendly case to your boat. The radius of the circle is your crow-flies distance from base. Based on what lies between you and home, you will want to add to that distance - sometimes a little, sometimes a lot. Then use the "Range at current speed" function to see how much range you have remaining. Like the RT guys, you should always add a "Bingo" (10% of your rated cruising range). After that, it's just a matter of how tight you want to pucker.

01-15-13, 04:49 PM	#11
Armistead Rear Admiral Join Date: Dec 2008 Location: on the Dan Posts: 10,880 Downloads: 364 Uploads: 0	Most mods like TMO give you tabs to estimate milage at current speed. __________________ You see my dog don't like people laughing. He gets the crazy idea you're laughing at him. Now if you apologize like I know you're going to, I might convince him that you really didn't mean it.

01-15-13, 10:26 AM	#12
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	Nope. no resupply ships for the USN at sea. The sub tenders were stationed at places like Guam, Midway, etc. Although if I remember correctly the mileage is completely whacked just like the battery discharge rate. I'm currently reading Submarine! by Capt. Edward L. Beach and it mentions boats running full speed to their patrol zones. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.