Construction

Introduction

Construction Menu as shown

Large Ship Construction Menu as shown

Construction is a feature that enables admirals to build new ships. Building ships consumes resources and one development material (or more devmats in the case of large ship construction) per attempt. Development materials can be earned by completing quests, expeditions, and some sorties.

Construction results are independent of HQ level, and are solely determined by the amount of resources and devmats used. There are also some ships that are currently unbuildable; this list can be found below.

It is sometimes more resource efficient to find your desired ship in sorties as a drop rather than building them, farming ships through sorties also has the added benefit of training your ships.

Large Ship Construction

Large Ship Construction (also abbreviated: LSC) involves the input of a larger quantity of resources (2,000-7,000 for steel, 1,000-7,000 for bauxite, 1,500-7,000 for other resources), along with 1, 20, or 100 development materials . The cost for instant construction is 10 units.

LSC is unlocked by completing two quests:

Complete Modernization Quest: You will be required to successfully modernize a ship 4 times.
Complete Crafting Quest: You will be required to scrap equipment four times (i.e. perform the scrap action four times, **not** scrap four pieces of equipment)

According to the official Twitter , having empty construction docks very slightly increases the chances of "better" ships appearing, but this has not been formally tested

Large ship construction is used to obtain ships that are otherwise impossible to build in regular construction or difficult to farm, such as Maruyu (who cannot be built in regular construction) or Musashi (who can neither be built nor farmed).

Furthermore, certain ships can only be constructed with designated secretary ships, for instance, constructing Saratoga requires either Kamoi or Iowa (both american-made ships).

Construction Time

The times below reflect the type of ship or specific ship you will obtain after hitting the build button.

Time	Ship Class	Result	Note
00:17:00	Transport Submarine	Maruyu	Maruyu can only be built through large-scale construction.
00:18:00	Destroyer	Mutsuki class	Uzuki is unbuildable.
00:20:00		Fubuki class, Ayanami class, Akatsuki class, Hatsuharu class
00:22:00		Shiratsuyu class, Asashio class	Harusame, Asagumo and Yamagumo are unbuildable.
00:22:00	Submarine	I-168, I-58, I-8
00:24:00	Destroyer	Kagerou class, Type 1934 Class	Yukikaze is included with the Kagerou-class.
00:30:00	Destroyer	Shimakaze
01:00:00	Light Cruiser	Tenryuu class, Kuma class, Nagara class, Sendai class	Kinu and Abukuma of the Nagara-class take longer to build.
	Light Cruiser	Agano class	Agano, Noshiro and Yahagi can only be built through large-scale construction. Sakawa is entirely unbuildable.
	Heavy Cruiser	Furutaka class, Aoba class
01:10:00	Training Cruiser	Katori
01:10:00	Heavy Cruiser	Zara	Can only be built through large-scale construction.
01:15:00	Light Cruiser	Kinu, Abukuma
01:20:00	Heavy Cruiser	Myoukou class
01:22:00	Light Cruiser	Yuubari
01:25:00	Heavy Cruiser	Takao class
01:30:00	Heavy Cruiser	Tone class, Mogami class	Mikuma can only be built through large-scale construction.
02:00:00	Light Aircraft Carrier	Houshou
02:20:00	Seaplane Tender	Chitose, Chiyoda
02:30:00	Amphibious Assault Ship	Akitsu Maru	Can only be built through large-scale construction.
02:40:00	Light Aircraft Carrier	Shouhou, Zuihou
02:50:00		Ryuujou
03:00:00		Hiyou, Junyou
03:20:00	Aircraft Carrying Submarine	I-401	Can only be built through large-scale construction.
04:00:00	Fast Battleship	Kongou class
04:10:00	Regular Aircraft Carrier	Souryuu, Hiryuu
04:20:00	Battleship	Fusou, Yamashiro
04:20:00	Regular Aircraft Carrier	Kaga
04:30:00	Battleship	Ise, Hyuuga
04:30:00	Regular Aircraft Carrier	Akagi
05:00:00	Battleship	Nagato, Mutsu, Bismarck	Bismarck can only be built through large-scale construction.
06:00:00	Regular Aircraft Carrier	Shoukaku, Zuikaku
06:40:00	Armored Aircraft Carrier	Taihou	Can only be built through large-scale construction.
08:00:00	Heavy Battleship	Yamato, Musashi	Can only be built through large-scale construction.

Ships currently not buildable

Available from Sortie
舞風 Maikaze 3-3 random drop, 5-2 boss drop, 5-5 random drop 初風 Hatsukaze 3-4 and 5-5 (all from bosses) 夕雲 Yuugumo 2-5, 4-2, 5-1, 5-2, 5-3, 5-4 drop (all from bosses), 6-2 random drop 巻雲 Makigumo 1-4, 2-3, 2-5, 4-3, 5-2, 6-1, 6-2 drop (all from bosses), 2-4, 5-4, 5-5 random drop 長波 Naganami 3-2, 3-5, 4-4, 5-1, 5-3, 6-1 drop (all from bosses), 5-4 random drop 酒匂 Sakawa 6-2 Boss Drop 卯月 Uzuki 2-5, 3-4, 4-4, 5-1, 5-2, 5-3, 5-4, 6-1 drop (all from bosses) 浦風 Urakaze 2-4, 2-5, 4-2, 4-3 Boss Drop 谷風 Tanikaze 3-5 drop 浜風 Hamakaze 2-2, 3-3, 4-2, 4-4, 5-2, 5-4, 5-5, 6-2 drop (all from bosses), 2-5, 6-1 random drop 伊19 I-19 2-5, 3-5, 5-4, 5-5 drop (all from bosses), 1-5, 6-1 random drop 天津風 Amatsukaze 3-5 boss node drop 明石 Akashi 1,5 Boss Drop (for those who don't have her), 2-5 Boss Drop (for those who don't have her), 3-5, 6-2 Random Drop 大淀 Ooyodo 1-6 random drop 大鯨 Taigei 2-4, 2-5, 3-4, 3-5, 4-4, 5-2, 5-5, 6-1 drop (all from bosses) 朝雲 Asagumo 1-6 random drop 山雲 Yamagumo 2-4, 3-3, 3-5 Boss Node drop 清霜 Kiyoshimo 4-5 Boss Node Drop 早霜 Hayashimo 4-5 Boss Node Drop 朝霜 Asashimo 4-5, 6-5 Boss Node Drop 時津風 Tokitsukaze 6-4 Boss Node Drop 野分 Nowaki 4-5, 6-5 Boss node Drop 春雨 Harusame 6-2 and 6-5 Boss node Drop 雲龍 Unryuu 6-2 Boss Node Drop 江風 Kawakaze 2-5 boss node drop 秋津洲 Akitsushima, 6-4 node drop 鹿島 Kashima 6-5 Boss Drop 風雲 Kazagumo 3-5 Boss Node Drop 海風 Umikaze 6-5 Boss Node Drop 高波 Takanami 6-5 Boss Node Drop 沖波 Okinami 6-5 Boss Node Drop 浦波 Uranami 2-4 Drop, 4-1 Boss Node, 5-1 Boss Node, 6-2 Boss Node リベッチオ Libeccio 4-5 Drop

Event Only
プリンツ・オイゲン Prinz Eugen 2014 Fall event E-3 Completion reward 天城 Amagi 2015 Winter Event E-5 Completion reward 磯風 Isokaze 2014 Summer event E-6 completion reward, 2015 Winter event E-5 drop 秋月 Akizuki 2014 Fall event E-2 Completion reward U-511, 2015 Winter event E-3 completion reward. Katsuragi, 2015 Spring event E-2 completion reward. Littorio 2015 Spring event E-4 completion reward. Roma, initially a random drop from E-6 of the 2015 Spring event, she has returned as a drop in all events since. Takanami, initially a random drop from numerous maps in the 2015 Spring event. Teruzuki Arashi Hagikaze Graf Zeppelin

These ships may become buildable in future updates.

Ships buildable only via large construction

大和 Yamato 2013 August event E4 complete reward
三隈 Mikuma 4-3, 5-2 boss drop
能代 Noshiro 2013 November event E2 complete reward
武蔵 Musashi 2013 November event E5 complete reward
阿賀野 Agano 5-4 boss drop
矢矧 Yahagi
大鳳 Taihou
あきつ丸 Akitsu Maru
まるゆ Maruyu
ビスマルク Bismarck
伊401 I-401 2013 Christmas event complete reward
Zara Zara Winter 2016 Event Reward
瑞穂 Mizuho Summer 2015 Event Reward, 5-3 Boss Drop, 6-4 Boss Drop
神威 Kamoi
Saratoga Saratoga Fall 2016 Event Reward

Building Recipes

Disclaimer: These recipes are not guaranteed to give you the ship you want in the number of crafting attempts that you can afford. Percentages listed are sourced from the Japanese databases and are not representative of the real craft-rates.

Destroyer

				Remarks
30	30	30	30	Mainly destroyers and light cruisers, with a small chance of heavy cruisers. No rare destroyers. Small chance of Yayoi, Yuubari.
250	30	200	30	Includes chance of rare destroyers (Shimakaze, Yukikaze, Z1, Z3) and submarines (I-168, I-58, I-8). 1.22% Shimakaze, 1.71% Yukikaze, 2.6% for submarines. [1] Z3 when using Z1 or I-8 as secretary ship. [2] Z1 when using Z3 as secretary ship.
250	130*	200	30	1.47% Shimakaze, 1.24% Yukikaze. 2.87% for submarines. [3]

Recipe percentages don't count Z3 yet.
It is highly likely that the Z1 unlock quest must be cleared before I-8 can construct Z3. There is only a small amount of evidence for this, but it's generally advisable to simply use Z1.

Light cruiser

				Remarks
30	30	30	30	Mainly destroyers and light cruisers, with a small chance of heavy cruisers. No rare destroyers. A small chance of Yuubari (1%).
250	30	200	30	Light cruisers, heavy cruisers, rare destroyers and submarines. Small chance to yield training cruiser Katori.

Heavy cruiser

				Remarks
250	30	200	30	Light cruisers, heavy cruisers, rare destroyers and submarines. Small chance to yield training cruiser Katori.
270	30	330	130	Slightly higher chance for heavy cruisers.

Battleship

				Remarks
400	100	600	30	BB (32.01%), CA (57.93%), CL (7.38%). 2.98% Suzuya, 2.53% Mutsu, 1.49% Nagato. [4]
500	30	600	30	BB (32.01%), CA (58.63%), CL (6.87%), slim chance to result in Suzuya, Mutsu, or Nagato.

Aircraft carrier

See also: List of Light Carriers and List of Standard Carriers

				Remarks
300	30	400	300	Most common recipe. 7.9% chance for carrier. 32.3% light carrier [5] Minimum amount needed to possible create a CV/CVL according to KC Kai data.
350	30	400	350	8.5% < 500 entries
300	30	600	400	14.3% < 500 entries
300	300	600	600	12%
350	30	600	350	11.9% carrier, 32.7% light carrier [6]

Submarine

				Remarks
250	30	200	30	SS (2.54%), recipe shared with rare destroyers and light cruisers. [7] >10000 entries
250	130	200	30	3.03% [8] >5000 entries

Large Ship Construction Recipe

Note: Based on Kancolle DB reports unless otherwise specified. Results may vary.

					Ship Name	Kancolle DB Report	UnlockACGWebPro Report
Any	Any	Any	Any	Any	Maruyu	14.9%% with 1.5/1.5/2/1 6.2% with 4/6/6/2 Using fewer resources increases your chance.
1500	1500	2000	1000	1	Nagato-class Mogami-class Agano-class	3.2% Nagato 6.2% Mutsu 3.2% Agano 2.1% Noshiro 1.7% Yahagi 2.1% Mikuma 3.0% Suzuya 3.2% Kumano 14.8% Maruyu (~25000 reports)
4000	2000	5000	7000	20	Taihou	6.7% (1257 reports)	5.2% (5805 reports)
4000	2000	5000	6000	20	Taihou	6.5% (490 reports)	5.7% (4231 reports)
4000	2000	5000	5200	20	Taihou	5.4% (1318 reports)	5.0% (13847 reports)
3600	2000	5300	5200	20	Taihou	4.6% Taihou 7.0% Akitsumaru (717 reports)
3600	2000	5300	5200	1	Akitsumaru	4.6% Taihou 7.0% Akitsumaru (717 reports)
4000	2000	5000	5500	20	Taihou Akitsumaru	6.0%Taihou (55 results) 8.6% Akitsumaru (78 results) (909 reports)
4000	6000	6000	3000	20	Yamato-class Yamato Focus	3.3% Yamato (50 results) 1.8% Musashi (28 results) 0.8% Bismarck (13 results) (1540 reports) Bismarck when using Z1, Z3, I-8 or Prinz Eugen as secretary.	2.7% Yamato (594 results) 3.0% Musashi (681 results) (22362 reports)
4000	6000	6000	3000	20	Yamato-class Yamato Focus		3.4% Bismarck (85 results) (2524 reports)
4000	7000	7000	2000	20	Yamato-class Musashi Focus	2.8% Yamato (104 results) 5.6% Musashi (209 results) 0.4% Bismarck (16 results) (3708 reports) Bismarck when using Z1, Z3, I-8 or Prinz Eugen as secretary	2.6% Yamato (165 results) 5.9% Musashi (380 results) (6409 reports)
				20	Yamato-class Musashi Focus		3.8% Bismarck (35 results) (920 reports)
				1	I-401		3.2% Yamato (27 results) 4.1% I-401 (34 results) (839 reports)
6000	7000	7000	2000	20	Yamato-class Musashi Focus		2.7% Yamato (271 results) 7.2% Musashi (721 results) (9975 reports)
4000	6000	7000	2000	20	Yamato-class Bismarck Focus	1.3% Yamato (44 results) 2.1% Musashi (70 results) 6.2% Bismarck (212 results) (3407 reports) Bismarck when using Z1, Z3, I-8 or Prinz Eugen as secretary	2.1% Yamato (295 results) 3.9% Musashi (543 results) (14091 reports)
4000	6000	7000	2000	20	Yamato-class Bismarck Focus		7.2% Bismarck (598 results) (8276 reports)
4000	6000	6000	2000	20	Yamato-class Most Reported	2.2% Yamato (253 results) 1.6% Musashi (186 results) 1.8% Bismarck (208 results) 0.9% I-401 (108 results) (11760 reports) Bismarck when using Z1, Z3, I-8 or Prinz Eugen as secretary	2.5% Yamato (1145 results) 2.9% Musashi (1301 results) 1.4% I-401 (613 results) (45344 reports)
				20	Yamato-class Most Reported		3.7% Bismarck (268 results) (7240 reports)
				1	I-401		2.5% Yamato (465 results) 4.3% I-401 (793 results) (18440 reports)
4000	5900	6000	2000	1	I-401	4.17% (1083 reports)	4.98% (241 reports)
4000	7000	7000	3000	1	I-401		6.86% (306 reports)
3000	4000	4000	2000	1	Zara	Libeccio or Pola as secretary ship.	Recently Discovered need testing
3500	3500	6000	6000	20	Kamoi		Recently Released as of September 12th, 2017
4000	2000	5000	6000	20	Kamoi Saratoga	Saratoga requires either Kamoi or Iowa as the Secretary ship in order to obtain her.	Recently Released as of September 12th, 2017
4000	2000	5000	7000	20	Kamoi Saratoga		Recently Released as of September 12th, 2017

Kancolle DB reports include all # development materials and secretary ships. This is especially noticeable for BB recipes where the number of attempts with/without Z1/Z3 skew the results towards either Bismarck or Yamato-class significantly. However, since the data sets are still significantly less biased than wikiwiki reports it still gives a better idea of what to expect.
It is highly likely that the Z1 unlock quest must be cleared before I-8 or Prinz Eugen can construct German ships. There is only a small amount of evidence for this, but it's generally advisable to simply use Z1, who has been proven.
Bismarck and Musashi do not appear with 1 dev mat. Shioi chances are improved with 1 dev mat. Yamato appears with all dev mat inputs. Aiming for Bismarck before Musashi can help save both resources and devmats as Musashi can always appear from a Bismarck attempt, but not necessarily the other way around (if a german ship is not used).