(REQUEST) Nisshin Seaplane Tender

Faith · 05-21-18, 03:45 AM

(Nisshin at dawn/dusk, sometime in 1942)

From Wikipedia (consulted at 10:00 on 21/05/2018)

During the 1930s, the Imperial Japanese Navy made increasing use of naval aviation as scouts for its cruiser and destroyer squadrons. Due to restrictions imposed by the Washington Naval Treaty and London Naval Treaty, the number of aircraft carriers was strictly regulated; however, there was no limitation as to seaplane tenders. Nisshin was a follow-on to the purpose-built seaplane tender design begun with the Chitose-class and was ordered by the Imperial Japanese Navy under the 3rd Naval Armaments Supplement Programme of 1937.

Nisshin was laid down on 2 November 1938 and launched on 30 November 1939 at Kure Naval Arsenal. Her completion was delayed by design changes and the onset of the Pacific War and was not commissioned until 27 February 1942. Shortly after commissioning, on 20 March 1942 Nisshin was assigned to Vice Admiral Teruhisa Komatsu’s IJN 6th Fleet together with the seaplane tender Chiyoda and the auxiliary cruiser Aikoku Maru, and participated in training exercises in the Inland Sea, during which time she recovered a miniature submarine which had been lost by Chiyoda.[5]

During the Battle of Midway, Nisshin was part of Main Body of the Japanese fleet. For this operation, she carried twelve Type A Kō-hyōteki-class submarines, which were intended to be stationed at Kure Atoll, which was to be seized as a seaplane base for operations against Midway Atoll. The operation was cancelled on the loss of the Japanese aircraft carriers during the Battle of Midway, and Nisshin returned to Hashirajima with her submarines on 14 June without having seen combat.[5]

From September 1942, Nisshin was at Kavieng in the Solomon Islands, where she was assigned to a number of Tokyo Express high speed transport runs to Guadalcanal through the end of November. These missions included the transport of artillery used during the Battle of Cape Esperance. On 28 September, she narrowly missed an attack by USS Sculpin (SS-191) east of the island of Kokoda. In October, she was damaged during an attack by an American dive bomber north of Tassafaronga. She was unloading at Tassafaronga during a subsequent run on 12 October when the Battle of Cape Esperance began, but was able with withdraw without engaging in combat. and in November she was withdrawn to Truk.[5]

During the first half of 1943, Nisshin continued to be used primarily as a fast transport between the Japanese home islands and Truk and Rabaul. During a refit at Kure in February 1943, an additional 18 Type 97 25 mm AA guns were installed.[5]

With the start of the large-scale Allied offensive in June 1943 against Japanese-occupied New Guinea and the Solomon Islands, Nisshin rushed troop reinforcements from Yokosuka to Bougainville Island. Loaded with 630 soldiers, 22 light tanks, ammunition and food supplies, she stopped at Truk and on 22 July, escorted by three destroyers, Nisshin attempted to run Bougainville Strait towards Buin. The convoy was attacked at 13:45 approximately 40 nautical miles southwest of Buin by three waves of American bombers, including 34 Douglas SBD Dauntless and twelve Consolidated B-24 Liberator bombers. Nisshin was able to evade the B-24s, working up to 34 knots, but was hit by four 227-kilogram and two 454-kilogram bombs dropped by the dive bombers during the second and third strikes, which exploded her aviation fuel stores and caused many casualties among the crowded soldiers. Severely damaged, Nisshin capsized to starboard and sank some fourteen minutes after the start of the air raid. Of the 1263 on board at the time (633 crewmen and 630 embarked troops), only 178 were rescued by the escorting destroyers, their efforts severely hampered by renewed air attacks.

On 10 September 1943, Nisshin was struck from the navy list .[6]

(Shipbucket version of IJN Nisshin, as she was commisionned)

(pixelated line drawing of IJN Nisshin as she appeared when commisionned)

The japanese Wikipedia page has a few more details. For instance, an upgraded version of Nisshin's diesels were proposed for the Yamato class, but the prototype proved a failure, and so the battleships used boilers instead.
Apart from those two pages, little additionnal information can be found.

Important detail : unlike her cousins, Nisshin had two catapults during her career, while the others carried four.

Characteristics (consulted on Wikipedia at 10:00 on 21/05/2018)

Displacement:

11,317 long tons (11,499 t) (standard)
12,500 long tons (12,700 t) (full load)

Length:

192.5 m (631 ft 7 in) OA
174 m (570 ft 10 in) P-P

Beam: 19.71 m (64 ft 8 in) Draft: 7.0 m (23 ft 0 in) Installed power: 47,000 shp (35,000 kW) Propulsion:

2 × geared steam turbines
2 × shafts

Speed: 28 kn (52 km/h; 32 mph) Complement: 633 (in 1943) Armament:

Aircraft carried: 25 × floatplanes Aviation facilities: 2 × aircraft catapults

Her career can be found in greater detail at:
http://www.combinedfleet.com/Nisshin.htm
http://www.combinedfleet.com/atully10.htm (detailed article of her sinking)

From my outsider's perspective on modeling, the ship could be made using the existing ingame Chitose. I hope a modder takes an interest in this ship.

Here is a superb 1/200 scale Nisshin, which can be found on:
http://i-am-modelist.com/2013/05/23/ijn-nisshin-3/
http://i-am-modelist.com/2013/05/08/ijn-nisshin/
It shows in great detail the seaplane arrangements and the deck clutter.

propbeanie · 05-21-18, 08:24 AM

... and to further cement the seed of an idea into someone else's mind (I am not skilled to understand 3D), here are some comparisons with an FotRSU ship:

The Nisshin from Wikipedia:

The Chitose, same source, image reversed for the comparison

Note that the Chitose has its old "main" guns changed to AA... Now, in the game, the Chitose:

I suppose I could have reversed it also... oh well. maybe later - Edit: finally did that...

Some surgery would be required, but you could get very close with this as a starting point...

overhead from the aft

overhead from the bow

Faith · 05-22-18, 07:04 AM

To further show the differences between the Chitose class and the Nisshin, here are two pictures from my attempt to create a frankenboat, using the turrets from the recent Katori class mod (which pretty much are identical to the Nisshin's). You can see how the foredeck is supposed to be longer.

propbeanie · 05-22-18, 09:02 AM

Looking at the pictures, the front turret would be a bit in front of the first AA position on the Chitose deck, the 2nd AA and its little "overhang" mount goes away, and most of that "blob" with the smaller AA above that (20mm??) gets cut back, and the main deck house then is cut back a bit, making room for the 2nd main deck gun turret, with a 3rd one then on the 2nd level... correct?... stack has to get moved back (what'd they do, side exhaust??), maybe some slight changes to the hanger deck area, and you've about got it... but don't forget the mini-subs on deck, along with the sea planes!...

Just a little background on the ship:
http://www.combinedfleet.com/Nisshin.htm
http://www.combinedfleet.com/atully10.htm
http://www.combinedfleet.com/cvlist.htm
why they put the Seaplane Tenders in with the carriers, I dunno, but... note that the Mizuho is also similar, though with a hangerdeck area that is quite a bit different in the few pictures you can find of it. All three of them appear to be different ships in all of their photos, and gun changes appear to happen every time they docked... The Akitsushima appears to be quite a bit different from the others, but who knows??...

Now, come on Faith, you got further with your edits than I ever did... you can do this! But, maybe we really should call on Zuikaku or noshiro?...

Faith · 05-23-18, 01:55 AM

Quote:

Originally Posted by propbeanie

Looking at the pictures, the front turret would be a bit in front of the first AA position on the Chitose deck, the 2nd AA and its little "overhang" mount goes away, and most of that "blob" with the smaller AA above that (20mm??) gets cut back, and the main deck house then is cut back a bit, making room for the 2nd main deck gun turret, with a 3rd one then on the 2nd level... correct?... stack has to get moved back (what'd they do, side exhaust??), maybe some slight changes to the hanger deck area, and you've about got it... but don't forget the mini-subs on deck, along with the sea planes!...

Just a little background on the ship:
http://www.combinedfleet.com/Nisshin.htm
http://www.combinedfleet.com/atully10.htm
http://www.combinedfleet.com/cvlist.htm
why they put the Seaplane Tenders in with the carriers, I dunno, but... note that the Mizuho is also similar, though with a hangerdeck area that is quite a bit different in the few pictures you can find of it. All three of them appear to be different ships in all of their photos, and gun changes appear to happen every time they docked... The Akitsushima appears to be quite a bit different from the others, but who knows??...

Now, come on Faith, you got further with your edits than I ever did... you can do this! But, maybe we really should call on Zuikaku or noshiro?...

Well, I can easily make a stand in Mizuho without it's open work station. But the ship disappeared in May 1942, without doing anything major. I don't think anyone would want it.
As for Akitsushima, it's a completely different craft, far smaller than the other seaplane tenders. It would require a dedicated model.
Maybe I should try my hand at a merchant based seaplane tender... Once I stop crashing Silent3D from sheer overload

06-15-19, 05:55 AM

Late to the party as usual

.

I was looking for info about Nisshin because I wanted to convert the stock Chitose, and found this not so old (by SH4 standards) thread while Googling.

I'm going to give it a try. Perhaps should I post some screenshots in a new thread, or simply continue with this one?

05-21-18, 03:45 AM	#1
Faith Bosun Join Date: Aug 2017 Posts: 64 Downloads: 73 Uploads: 6	(REQUEST) Nisshin Seaplane Tender (Nisshin at dawn/dusk, sometime in 1942) From Wikipedia (consulted at 10:00 on 21/05/2018) During the 1930s, the Imperial Japanese Navy made increasing use of naval aviation as scouts for its cruiser and destroyer squadrons. Due to restrictions imposed by the Washington Naval Treaty and London Naval Treaty, the number of aircraft carriers was strictly regulated; however, there was no limitation as to seaplane tenders. Nisshin was a follow-on to the purpose-built seaplane tender design begun with the Chitose-class and was ordered by the Imperial Japanese Navy under the 3rd Naval Armaments Supplement Programme of 1937. Nisshin was laid down on 2 November 1938 and launched on 30 November 1939 at Kure Naval Arsenal. Her completion was delayed by design changes and the onset of the Pacific War and was not commissioned until 27 February 1942. Shortly after commissioning, on 20 March 1942 Nisshin was assigned to Vice Admiral Teruhisa Komatsu’s IJN 6th Fleet together with the seaplane tender Chiyoda and the auxiliary cruiser Aikoku Maru, and participated in training exercises in the Inland Sea, during which time she recovered a miniature submarine which had been lost by Chiyoda.[5] During the Battle of Midway, Nisshin was part of Main Body of the Japanese fleet. For this operation, she carried twelve Type A Kō-hyōteki-class submarines, which were intended to be stationed at Kure Atoll, which was to be seized as a seaplane base for operations against Midway Atoll. The operation was cancelled on the loss of the Japanese aircraft carriers during the Battle of Midway, and Nisshin returned to Hashirajima with her submarines on 14 June without having seen combat.[5] From September 1942, Nisshin was at Kavieng in the Solomon Islands, where she was assigned to a number of Tokyo Express high speed transport runs to Guadalcanal through the end of November. These missions included the transport of artillery used during the Battle of Cape Esperance. On 28 September, she narrowly missed an attack by USS Sculpin (SS-191) east of the island of Kokoda. In October, she was damaged during an attack by an American dive bomber north of Tassafaronga. She was unloading at Tassafaronga during a subsequent run on 12 October when the Battle of Cape Esperance began, but was able with withdraw without engaging in combat. and in November she was withdrawn to Truk.[5] During the first half of 1943, Nisshin continued to be used primarily as a fast transport between the Japanese home islands and Truk and Rabaul. During a refit at Kure in February 1943, an additional 18 Type 97 25 mm AA guns were installed.[5] With the start of the large-scale Allied offensive in June 1943 against Japanese-occupied New Guinea and the Solomon Islands, Nisshin rushed troop reinforcements from Yokosuka to Bougainville Island. Loaded with 630 soldiers, 22 light tanks, ammunition and food supplies, she stopped at Truk and on 22 July, escorted by three destroyers, Nisshin attempted to run Bougainville Strait towards Buin. The convoy was attacked at 13:45 approximately 40 nautical miles southwest of Buin by three waves of American bombers, including 34 Douglas SBD Dauntless and twelve Consolidated B-24 Liberator bombers. Nisshin was able to evade the B-24s, working up to 34 knots, but was hit by four 227-kilogram and two 454-kilogram bombs dropped by the dive bombers during the second and third strikes, which exploded her aviation fuel stores and caused many casualties among the crowded soldiers. Severely damaged, Nisshin capsized to starboard and sank some fourteen minutes after the start of the air raid. Of the 1263 on board at the time (633 crewmen and 630 embarked troops), only 178 were rescued by the escorting destroyers, their efforts severely hampered by renewed air attacks. On 10 September 1943, Nisshin was struck from the navy list .[6] (Shipbucket version of IJN Nisshin, as she was commisionned) (pixelated line drawing of IJN Nisshin as she appeared when commisionned) The japanese Wikipedia page has a few more details. For instance, an upgraded version of Nisshin's diesels were proposed for the Yamato class, but the prototype proved a failure, and so the battleships used boilers instead. Apart from those two pages, little additionnal information can be found. Important detail : unlike her cousins, Nisshin had two catapults during her career, while the others carried four. Characteristics (consulted on Wikipedia at 10:00 on 21/05/2018) Displacement: 11,317 long tons (11,499 t) (standard) 12,500 long tons (12,700 t) (full load) Length: 192.5 m (631 ft 7 in) OA 174 m (570 ft 10 in) P-P Beam: 19.71 m (64 ft 8 in) Draft: 7.0 m (23 ft 0 in) Installed power: 47,000 shp (35,000 kW) Propulsion: 2 × geared steam turbines 2 × shafts Speed: 28 kn (52 km/h; 32 mph) Complement: 633 (in 1943) Armament: 6 × 14 cm/50 3rd Year Type naval guns 18 × Type 96 25 mm AA guns 700 naval mines Aircraft carried: 25 × floatplanes Aviation facilities: 2 × aircraft catapults Her career can be found in greater detail at: http://www.combinedfleet.com/Nisshin.htm http://www.combinedfleet.com/atully10.htm (detailed article of her sinking) From my outsider's perspective on modeling, the ship could be made using the existing ingame Chitose. I hope a modder takes an interest in this ship. Here is a superb 1/200 scale Nisshin, which can be found on: http://i-am-modelist.com/2013/05/23/ijn-nisshin-3/ http://i-am-modelist.com/2013/05/08/ijn-nisshin/ It shows in great detail the seaplane arrangements and the deck clutter.

05-21-18, 08:24 AM	#2
propbeanie CTD - it's not just a job Join Date: May 2016 Location: One hour from Music City USA! Posts: 9,749 Downloads: 439 Uploads: 2	... and to further cement the seed of an idea into someone else's mind (I am not skilled to understand 3D), here are some comparisons with an FotRSU ship: The Nisshin from Wikipedia: The Chitose, same source, image reversed for the comparison Note that the Chitose has its old "main" guns changed to AA... Now, in the game, the Chitose: I suppose I could have reversed it also... oh well. maybe later - Edit: finally did that... Some surgery would be required, but you could get very close with this as a starting point... overhead from the aft overhead from the bow __________________ "...and bollocks to the naysayer/s" - Jimbuna Last edited by propbeanie; 06-15-19 at 08:06 AM. Reason: Flip the Chitose in-game image

05-22-18, 09:02 AM	#4
propbeanie CTD - it's not just a job Join Date: May 2016 Location: One hour from Music City USA! Posts: 9,749 Downloads: 439 Uploads: 2	Looking at the pictures, the front turret would be a bit in front of the first AA position on the Chitose deck, the 2nd AA and its little "overhang" mount goes away, and most of that "blob" with the smaller AA above that (20mm??) gets cut back, and the main deck house then is cut back a bit, making room for the 2nd main deck gun turret, with a 3rd one then on the 2nd level... correct?... stack has to get moved back (what'd they do, side exhaust??), maybe some slight changes to the hanger deck area, and you've about got it... but don't forget the mini-subs on deck, along with the sea planes!... Just a little background on the ship: http://www.combinedfleet.com/Nisshin.htm http://www.combinedfleet.com/atully10.htm http://www.combinedfleet.com/cvlist.htm why they put the Seaplane Tenders in with the carriers, I dunno, but... note that the Mizuho is also similar, though with a hangerdeck area that is quite a bit different in the few pictures you can find of it. All three of them appear to be different ships in all of their photos, and gun changes appear to happen every time they docked... The Akitsushima appears to be quite a bit different from the others, but who knows??... Now, come on Faith, you got further with your edits than I ever did... you can do this! But, maybe we really should call on Zuikaku or noshiro?... __________________ "...and bollocks to the naysayer/s" - Jimbuna

05-22-18, 07:04 AM	#3
Faith Bosun Join Date: Aug 2017 Posts: 64 Downloads: 73 Uploads: 6	To further show the differences between the Chitose class and the Nisshin, here are two pictures from my attempt to create a frankenboat, using the turrets from the recent Katori class mod (which pretty much are identical to the Nisshin's). You can see how the foredeck is supposed to be longer.

06-15-19, 05:55 AM	#6
JapLance Stowaway Posts: n/a Downloads: Uploads:	Late to the party as usual . I was looking for info about Nisshin because I wanted to convert the stock Chitose, and found this not so old (by SH4 standards) thread while Googling. I'm going to give it a try. Perhaps should I post some screenshots in a new thread, or simply continue with this one?