SUBSIM Radio Room Forums - View Single Post - [TEC] Unit of measurement fix for merchant ship slowdown

nematode · 05-25-07, 05:34 PM

NOTES

Note 1 -- Agano's center of gravity is high, needs reducing. It almost lays on its side in a high speed turn. CG is beyond the scope of this post, so, I'm just sayin.

Note 2 -- Akitsu is seriously broken. Its rudder is displaced off the model by about 100 meters, and it gets stuck trying to turn. I don't know how to fix it, so, once again, I'm just sayin.

Note 3 -- Furutaka class Heavy Cruisers had 102,000 shp. See Jentschura page 79. Is it just my PC, or is part of Furutaka's rigging missing?

Note 4 -- Kuma class Light Cruisers had 90,000 shp. See Jentschura page 106.

Note 5 -- Taiyo class Escort Carriers Taiyo, Unyo, and Chuyo were converted from brand new NYK steam turbine ocean liners Kasuga Maru, Yawata Maru, and Nitta Maru, respectively, and had 25,200 shp. See Jentsura page 58. Andrew Toppan lists 25,200 shp for Taiyo class at http://www.hazegray.org/navhist/carr...cv.htm#taiy-cl Fumio Nagasawa lists 25,200 shp for class leader Nitta Maru at http://homepage3.nifty.com/jpnships/...1_oshu_nyk.htm

Note 6 -- Okinoshima Large Minelayer had 9,000 shp. See Jentschura page 200.

Note 7 -- BB New Mexico and sister ships received a refit in the 1930's, upgrading engines to 40,000 shp. See http://www.hazegray.org/navhist/batt...s_dr.htm#nm-cl

Note 8 -- Baltimore class Heavy Cruisers had 120,000 hp, see http://www.hazegray.org/navhist/cruisers/ca-cl2.htm

Note 9 -- Cleveland class Light Cruisers had 100,000 hp, see http://www.hazegray.org/navhist/cruisers/ca-cl2.htm I'm assuming that SH4 v1.2 eng_power values for Baltimore and Cleveland were data entry errors.

Note 10 -- NKLCS_Nagara = Large Modern Composite Freighter. The one merchant ship in the game that's actually overpowered. In real life, Nagara Maru was a 1933 built diesel powered fast passenger/cargo vessel. Ships of this type were built to government specs for private shipping lines under subsidy programs and heavily requisitioned by the Japanese military as troopships and auxiliary naval vesels. Fumio Nagasawa lists 6700 hp at http://homepage3.nifty.com/jpnships/...okubei_nyk.htm 6700hp is consistent with values found in Hisashi Noma for similar vessels.

Note 11 -- NKLSS_Hakusika = Large Old Split Freighter. In real life known as Hakushika Maru, built 1917, triple expansion reciprocating steam engine. 5461 ihp is from http://homepage3.nifty.com/jpnships/...ano_aclass.htm Notice that Fumio Nagasawa lists both nhp and ihp for this vessel. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/295.pdf

Note 12 -- NKMCS_Akita = Medium Composite Superstructure Freighter. In real life Akita Maru was built 1916, triple expansion reciprocating steam engine. 2899 ihp is from http://homepage3.nifty.com/jpnships/...akitaclass.htm
Notice that Fumio Nagasawa lists both nhp and ihp for this vessel. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/016.pdf

Note 13 -- NKMCS_Heito = Medium Modern Composite Superstructure Freighter. In real life Heito Maru was built 1934, steam turbine fast cargo/passenger ship. 3786 shp is from Hisashi Noma page 117, confirmed by Fumio Nagasawa at http://homepage3.nifty.com/jpnships/...taiwan_osk.htm UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/310.pdf

Note 14 -- NKMCS_Zinbu = Medium European Composite Superstructure Freighter. In real life known as Jinbu Maru, built 1894 England, later sold to a Japanese shipping company. An antique by the time of WW2, Jinbu Maru was sunk in the Sea of Okhotsk by submarine S30. I've found no technical data on Jinbu Maru, 2500 hp is an estimate based on comparisons with similar vessels. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/360.pdf

Note 15 -- NKMSS_Biyo = Medium Old Split Superstructure Freighter. The real life Biyo Maru was built 1920, member of the numerous Yoshida Maru No. 1 class, possibly with a different power plant than its triple expansion reciprocating steam engine powered sister ships. I don't have a horsepower figure for Biyo Maru, but Hisashi Noma page 279 lists 3973hp for sister ship Havre Maru, and Fumio Nagasawa lists 2800 ihp for Havre Maru at http://homepage3.nifty.com/jpnships/...ano_bclass.htm

Note 16 -- NKMSS_Kinposan = Medium Modern Split Superstructure Freighter. The real life Kinposan Maru was built 1936, triple expansion reciprocating steam engine with turbo supercharger. Requisitioned by the Japanese Navy and converted into an auxiliary gunboat/minelayer with 4x120mm guns and 2x7.7mm MG along with its sister ship Kinjosan Maru. The only ihp info I could find comes from a dissertation in Japanese at http://ci.nii.ac.jp/naid/110003879646/ which translates to "The engine develops a normal output of 1950 I.H.P.at 82 r.p.m. The trials were carried out at a light loaded condition and the results were quite satisfactory. The maximum speed of 14.5075 Knots was recorded at 89.75 r.p.m.and 2,324 I.H.P. ..." , It's not the authoritative source that I wanted but it beats no sources at all. Having said that. 2,324 ihp looks believable for this ship. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/385.pdf

Note 17 -- NKSCS_Taihosan = Composite Superstructure Freighter. In real life Taihosan Maru was built 1938, triple expansion reciprocating steam engine with turbo-supercharger. During wartime Taihosan Maru was used as a fresh water tanker bringing water to garrisoned islands. Hisashi Noma page 95 lists 1000hp. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/680.pdf

Note 18 -- NKSSS_Kasagisan = Small Old Split Superstructure Freighter. In real life Kasagisan Maru was built 1925, triple expansion reciprocating steam engine. Hisashi Noma page 445 lists 1633 hp. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/374.pdf

Note 19 -- NOL_Nippon = Large Modern Tanker. SH4 bug limits this ship to 9 knots, should be 20 knots. In real life Nippon Maru was built in 1936 as a diesel powered fast tanker. This ship and many of its sister ships were requisitioned by the Japanese Navy for use as auxiliary fleet oilers. Fumio Nagasawa lists 9773 bhp at http://homepage3.nifty.com/jpnships/..._showa1_02.htm UBIdev nhp number corresponds to that of sister ship Genyo Maru, which can be found at http://perso.orange.fr/cdasm.56/dictionnaire/267.pdf

Note 20 -- NOM_Buzyun = Medium Old Tanker. I have no useful info on the real life Buzyun Maru (aka Bujun Maru). My estimate of 2900 hp is based on comparisons with vessels of similar date of build and displacement.

Note 21 -- NOS_Haruna = Small Old Tanker. I'm at a loss for what this is modeled after. There was a Haruna Maru, but it was a 10,000 ton NYK ocean liner that foundered on the rocks in 1942. Maybe it's a model of Haruta Maru, which was a 1515 ton Norwegian merchant ship built in 1925 named Halldor captured by the Japanese in December 1941, and used until it got sunk in 1945. It's driving me nuts but, I found 1414 ihp for this ship somewhere, and didn't write down where. Now I can't find it again. Goes to show I shouldn't search for things at 4am. That being the case, 1414 ihp is my estimate.

Note 22 -- NPL_Conte_Verde = European Built Liner. The real life Conte Verde was a 1920's-built Italian ocean liner that was trapped at Shanghai in Dec 1941. It remained there until the Italian armistice in 1943, when its crew scuttled it. The Japanese raised it, repaired it, renamed it Kotobuki Maru, and it got sunk for good in 1944. I could find no technical specs on Conte Verde. My estimate of 20,000 hp is based on comparisons with other 1920's era passenger liners.

Note 23 -- NPL_Horai = Large Old Passenger Carrier. The real life Horai Maru was built in 1912 in Great Britain with a quadruple expansion reciprocating steam engine, sold to Japanese shipping line OSK in 1923. Sunk by friendly fire in 1942. Hisashi Noma page 16 lists 7400 hp, Fumio Nagasawa lists 8132 ihp at http://homepage3.nifty.com/jpnships/...taiwan_osk.htm UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/328.pdf

Note 24 -- NPL_Kiturin = Modern Passenger Liner. In real life known as Kitsurin Maru, built in 1935, steam turbine engine. I don't have much useful on Kitsurin Maru, but it had a sister ship named Nekka Maru, and there's good info on that ship. Hisashi Noma page 141 lists 8395 hp for Nekka Maru; Fumio Nagasawa lists 7,800 shp for Nekka Maru at http://homepage3.nifty.com/jpnships/...dairen_osk.htm UBIdev nhp number matches up with Nekka Maru at http://perso.orange.fr/cdasm.56/dictionnaire/498.pdf

Note 25 -- NPS_Tyohei = Small Passenger Carrier. I don't have any info on what this ship was in real life. My estimate of 1000 hp is based on comparison with Taihosan Maru.

05-25-07, 05:34 PM	#3
nematode Seaman Join Date: Apr 2005 Posts: 40 Downloads: 8 Uploads: 0	NOTES Note 1 -- Agano's center of gravity is high, needs reducing. It almost lays on its side in a high speed turn. CG is beyond the scope of this post, so, I'm just sayin. Note 2 -- Akitsu is seriously broken. Its rudder is displaced off the model by about 100 meters, and it gets stuck trying to turn. I don't know how to fix it, so, once again, I'm just sayin. Note 3 -- Furutaka class Heavy Cruisers had 102,000 shp. See Jentschura page 79. Is it just my PC, or is part of Furutaka's rigging missing? Note 4 -- Kuma class Light Cruisers had 90,000 shp. See Jentschura page 106. Note 5 -- Taiyo class Escort Carriers Taiyo, Unyo, and Chuyo were converted from brand new NYK steam turbine ocean liners Kasuga Maru, Yawata Maru, and Nitta Maru, respectively, and had 25,200 shp. See Jentsura page 58. Andrew Toppan lists 25,200 shp for Taiyo class at http://www.hazegray.org/navhist/carr...cv.htm#taiy-cl Fumio Nagasawa lists 25,200 shp for class leader Nitta Maru at http://homepage3.nifty.com/jpnships/...1_oshu_nyk.htm Note 6 -- Okinoshima Large Minelayer had 9,000 shp. See Jentschura page 200. Note 7 -- BB New Mexico and sister ships received a refit in the 1930's, upgrading engines to 40,000 shp. See http://www.hazegray.org/navhist/batt...s_dr.htm#nm-cl Note 8 -- Baltimore class Heavy Cruisers had 120,000 hp, see http://www.hazegray.org/navhist/cruisers/ca-cl2.htm Note 9 -- Cleveland class Light Cruisers had 100,000 hp, see http://www.hazegray.org/navhist/cruisers/ca-cl2.htm I'm assuming that SH4 v1.2 eng_power values for Baltimore and Cleveland were data entry errors. Note 10 -- NKLCS_Nagara = Large Modern Composite Freighter. The one merchant ship in the game that's actually overpowered. In real life, Nagara Maru was a 1933 built diesel powered fast passenger/cargo vessel. Ships of this type were built to government specs for private shipping lines under subsidy programs and heavily requisitioned by the Japanese military as troopships and auxiliary naval vesels. Fumio Nagasawa lists 6700 hp at http://homepage3.nifty.com/jpnships/...okubei_nyk.htm 6700hp is consistent with values found in Hisashi Noma for similar vessels. Note 11 -- NKLSS_Hakusika = Large Old Split Freighter. In real life known as Hakushika Maru, built 1917, triple expansion reciprocating steam engine. 5461 ihp is from http://homepage3.nifty.com/jpnships/...ano_aclass.htm Notice that Fumio Nagasawa lists both nhp and ihp for this vessel. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/295.pdf Note 12 -- NKMCS_Akita = Medium Composite Superstructure Freighter. In real life Akita Maru was built 1916, triple expansion reciprocating steam engine. 2899 ihp is from http://homepage3.nifty.com/jpnships/...akitaclass.htm Notice that Fumio Nagasawa lists both nhp and ihp for this vessel. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/016.pdf Note 13 -- NKMCS_Heito = Medium Modern Composite Superstructure Freighter. In real life Heito Maru was built 1934, steam turbine fast cargo/passenger ship. 3786 shp is from Hisashi Noma page 117, confirmed by Fumio Nagasawa at http://homepage3.nifty.com/jpnships/...taiwan_osk.htm UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/310.pdf Note 14 -- NKMCS_Zinbu = Medium European Composite Superstructure Freighter. In real life known as Jinbu Maru, built 1894 England, later sold to a Japanese shipping company. An antique by the time of WW2, Jinbu Maru was sunk in the Sea of Okhotsk by submarine S30. I've found no technical data on Jinbu Maru, 2500 hp is an estimate based on comparisons with similar vessels. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/360.pdf Note 15 -- NKMSS_Biyo = Medium Old Split Superstructure Freighter. The real life Biyo Maru was built 1920, member of the numerous Yoshida Maru No. 1 class, possibly with a different power plant than its triple expansion reciprocating steam engine powered sister ships. I don't have a horsepower figure for Biyo Maru, but Hisashi Noma page 279 lists 3973hp for sister ship Havre Maru, and Fumio Nagasawa lists 2800 ihp for Havre Maru at http://homepage3.nifty.com/jpnships/...ano_bclass.htm Note 16 -- NKMSS_Kinposan = Medium Modern Split Superstructure Freighter. The real life Kinposan Maru was built 1936, triple expansion reciprocating steam engine with turbo supercharger. Requisitioned by the Japanese Navy and converted into an auxiliary gunboat/minelayer with 4x120mm guns and 2x7.7mm MG along with its sister ship Kinjosan Maru. The only ihp info I could find comes from a dissertation in Japanese at http://ci.nii.ac.jp/naid/110003879646/ which translates to "The engine develops a normal output of 1950 I.H.P.at 82 r.p.m. The trials were carried out at a light loaded condition and the results were quite satisfactory. The maximum speed of 14.5075 Knots was recorded at 89.75 r.p.m.and 2,324 I.H.P. ..." , It's not the authoritative source that I wanted but it beats no sources at all. Having said that. 2,324 ihp looks believable for this ship. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/385.pdf Note 17 -- NKSCS_Taihosan = Composite Superstructure Freighter. In real life Taihosan Maru was built 1938, triple expansion reciprocating steam engine with turbo-supercharger. During wartime Taihosan Maru was used as a fresh water tanker bringing water to garrisoned islands. Hisashi Noma page 95 lists 1000hp. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/680.pdf Note 18 -- NKSSS_Kasagisan = Small Old Split Superstructure Freighter. In real life Kasagisan Maru was built 1925, triple expansion reciprocating steam engine. Hisashi Noma page 445 lists 1633 hp. UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/374.pdf Note 19 -- NOL_Nippon = Large Modern Tanker. SH4 bug limits this ship to 9 knots, should be 20 knots. In real life Nippon Maru was built in 1936 as a diesel powered fast tanker. This ship and many of its sister ships were requisitioned by the Japanese Navy for use as auxiliary fleet oilers. Fumio Nagasawa lists 9773 bhp at http://homepage3.nifty.com/jpnships/..._showa1_02.htm UBIdev nhp number corresponds to that of sister ship Genyo Maru, which can be found at http://perso.orange.fr/cdasm.56/dictionnaire/267.pdf Note 20 -- NOM_Buzyun = Medium Old Tanker. I have no useful info on the real life Buzyun Maru (aka Bujun Maru). My estimate of 2900 hp is based on comparisons with vessels of similar date of build and displacement. Note 21 -- NOS_Haruna = Small Old Tanker. I'm at a loss for what this is modeled after. There was a Haruna Maru, but it was a 10,000 ton NYK ocean liner that foundered on the rocks in 1942. Maybe it's a model of Haruta Maru, which was a 1515 ton Norwegian merchant ship built in 1925 named Halldor captured by the Japanese in December 1941, and used until it got sunk in 1945. It's driving me nuts but, I found 1414 ihp for this ship somewhere, and didn't write down where. Now I can't find it again. Goes to show I shouldn't search for things at 4am. That being the case, 1414 ihp is my estimate. Note 22 -- NPL_Conte_Verde = European Built Liner. The real life Conte Verde was a 1920's-built Italian ocean liner that was trapped at Shanghai in Dec 1941. It remained there until the Italian armistice in 1943, when its crew scuttled it. The Japanese raised it, repaired it, renamed it Kotobuki Maru, and it got sunk for good in 1944. I could find no technical specs on Conte Verde. My estimate of 20,000 hp is based on comparisons with other 1920's era passenger liners. Note 23 -- NPL_Horai = Large Old Passenger Carrier. The real life Horai Maru was built in 1912 in Great Britain with a quadruple expansion reciprocating steam engine, sold to Japanese shipping line OSK in 1923. Sunk by friendly fire in 1942. Hisashi Noma page 16 lists 7400 hp, Fumio Nagasawa lists 8132 ihp at http://homepage3.nifty.com/jpnships/...taiwan_osk.htm UBIdev nhp number can be found at http://perso.orange.fr/cdasm.56/dictionnaire/328.pdf Note 24 -- NPL_Kiturin = Modern Passenger Liner. In real life known as Kitsurin Maru, built in 1935, steam turbine engine. I don't have much useful on Kitsurin Maru, but it had a sister ship named Nekka Maru, and there's good info on that ship. Hisashi Noma page 141 lists 8395 hp for Nekka Maru; Fumio Nagasawa lists 7,800 shp for Nekka Maru at http://homepage3.nifty.com/jpnships/...dairen_osk.htm UBIdev nhp number matches up with Nekka Maru at http://perso.orange.fr/cdasm.56/dictionnaire/498.pdf Note 25 -- NPS_Tyohei = Small Passenger Carrier. I don't have any info on what this ship was in real life. My estimate of 1000 hp is based on comparison with Taihosan Maru. Last edited by nematode; 05-25-07 at 07:28 PM.