Re: UPDATE ON PROJECT 'RÅtasu/Lianhua'
TO SUPERINTENDENT YAMOKAWA-KAMA,
I PRESENT YOU A STATUS UPDATE ON THE PROJECT'S FOURTH YEAR.
AS OF THE TIME OF WRITING, TWO-HUNDRED AND SEVENTY-EIGHT UNITS HAVE BEEN PRODUCED. THE FOLLOWING ARE A RECOUNT OF VARIANTS AND THEIR ASSOCIATED INFORMATION, SUCH AS TESTING, FATE, AND NUMBER.
LIANHUA TYPE 1 EXPERIMENTAL - PROTOTYPE ORIGINALLY PRESENTED TO THE IMPERIAL NAVY.
- 4 PRODUCED AND 1 EXPENDED IN DEMONSTRATION. 2 LOST IN TESTS. REMAINDERS SCRAPPED.
- RANGE: 17,000 YARDS MAXIMUM AT 34 KN
UNITS SUFFERED FROM POOR VISIBILITY TO CONTROLLERS, AS WELL AS MANEUVERABILITY, RELIABILITY, AND RANGE. TWO PROTOTYPES SUFFERED INTERNAL COMPARTMENT FLOODING AND WERE LOST. ONE PREMATURELY DETONATED, BLAMED ON FAULTY ARMING SYSTEM.
LIANHUA TYPE 1 (INCLUDING A, B, C, D VARIANTS) - VARIANTS WITH RECOMMENDED CHANGES.
- 14 PRODUCED, AND 4 EXPENDED IN TESTS. 7 LOST IN TESTS. SCRAPPING OF REMAINDERS PENDING.
- RANGE: 24,000 YARDS MAXIMUM AT 34 KN
IMPROVEMENTS MADE ON THE TYPE 1 PRODUCTION INCREASED RANGE AND SOME RELIABILITY. MANEUVERABILITY REMAINS PROBLEM: INCREASED CAVITATION BY INCREASING EXHAUST FLOW HAMPERED THE EFFECTIVENESS OF THE HOME THREAD'S COMMANDS. CAVITATION WAS NOT ALWAYS PRESENT. MULTIPLE ADDITIONAL UNITS WERE PRODUCED TO FURTHER TEST LIMITATIONS OF THE DESIGN BEFORE PRODUCTION WAS CEASED.
LIANHUA TYPE 2 - IMPROVED FROM TYPE 1 DESIGNS
- 9 PRODUCED, AND 4 EXPENDED IN TESTS. 4 LOST IN TESTS. 1 IN STORAGE.
- RANGE: 28,000 YARDS MAXIMUM AT 39 KN
SUBSTANTIAL IMPROVEMENTS TO RELIABILITY, MANEUVERABILITY, AND OTHER FIELDS. GUIDANCE APPARATUS OF BOTH UNIT AND OPERATOR'S CONSOLE UPGRADED TO A TYPE 2 VARIANT ALLOWING FOR SIMPLIFIED MOVEMENT, IN ADDITION TO A MEASURED AMOUNT OF THREAD BEING NECESSARY FOR THE INCREASED CAVITATION OF THE TORPEDO TO FIRE. IMPROVED FINS DIRECT CAVITATION AWAY FROM HOME THREAD AND TOWARDS SURFACE. WAKE SUBSTANTIALLY INCREASED. COST IS HOWEVER ALSO DRASTICALLY INCREASED: ONE WEEK WAS REQUIRED FOR A SINGLE UNIT'S FABRICATION.
LIANHUA TYPE 2A - PRE-PRODUCTION TRIAL MODEL OF TYPE 2
- 16 PRODUCED, 7 EXPENDED IN TESTS. 6 LOST IN TESTS. 3 IN STORAGE.
- RANGE: 30,000 YARDS MAXIMUM AT 41 KN
INTERNAL PARTS OF THE APPARATUS HAVE BEEN EXCHANGED FOR ALUMINUM FROM HEAVIER MATERIALS TO LESSEN WEIGHT AND THUS INCREASE RANGE AND SPEED. ARMING MECHANISM NEEDED TO BE COMPLETELY CHANGED TO ACCOUNT FOR AN ANOMALY WHERE CERTAIN SEA CONDITIONS WOULD PREMATURELY SET OFF THE DETONATOR. FULL CIRCUMSTANCES ARE NOT WELL UNDERSTOOD, AND REMAINING UNITS ARE NOW IN STORAGE.
LIANHUA TYPE 2B - PRODUCTION MODEL OF TYPE 2
- 8 UNITS PRODUCED, 4 EXPENDED IN TESTS. 3 LOST IN TESTS. 1 IN STORAGE.
- RANGE: 29,500 YARDS MAXIMUM AT 41 KN
FURTHER IMPROVEMENTS TO RELIABILITY MADE: IMPROVED TYPE 4 GUIDANCE APPARATUS HAS BEEN INSTALLED WITH FEATURES TO AUTOMATICALLY COUNTER SEA CURRENTS. THESE COMPLICATE THE OPERATOR CONSOLE HOWEVER, AND IT WILL TAKE MORE TIME TO TRAIN OPERATORS ON THE SYSTEM. LARGER BATTERIES WERE NEEDED TO POWER THIS SYSTEM, FURTHER REDUCING RANGE. NEVERTHELESS, THIS PRODUCTION MODEL IS LIKELY THE BEST OUT OF THE ENTIRE PROJECT FOR DEPLOYMENT IN THE ROYAL BATTLE FLEET AT THIS TIME.
LIANHUA TYPE 2C - TROPICAL WATERS EXPERIMENTAL MODEL OF TYPE 2
- 2 UNITS UNDER PRODUCTION
- RANGE: 18,000 YARDS MAXIMUM AT 36 KN (EXPECTED)
INCREASED BUOYANCY TO COMBAT WARM WATERS. RELIABILITY DRASTICALLY INCREASED WITH MULTIPLE REDUNDANCY FEATURES, BUT RANGE AND SPEED WILL SUFFER CONSIDERABLY. STILL UNDER DEVELOPMENT.
LIANHUA TYPE 2B - TRAINING VARIANT OF THE TYPE 2B
- 4 UNITS PRODUCED, 1 TESTED, 3 IN STORAGE.
- RANGE: 29,500 YARDS MAXIMUM AT 41 KN
tRAINING VARIANT FEATURES INERT WARHEAD AND A DETACHABLE REINFORCED COMPARTMENT CONTAINING THE GUIDANCE APPARATUS TO BE REUSED. IN DEVELOPMENT.
SUPERINTENDENT, DESPITE OUR BEST EFFORTS, INDIVIDUAL COSTS OF EACH UNITS ARE BECOMING INCREASINGLY SUBSTANTIAL ALONGSIDE RELIABILITY ISSUES. EACH UNIT AT THIS TIME TAKES UPWARDS OF A WEEK FOR MY TEAM TO FINISH FABRICATION, AND FOR THE SCALE OF THE PROJECT THE THREE WORKSHOPS MY TEAM CURRENTLY OCCUPIES IS NO LONGER ENOUGH. FOR THESE REASONS, I WOULD LIKE TO REQUEST ORDERS ON WHETHER TO FOCUS ON CONTINUED DEVELOPMENT OF IMPROVED MODELS, OR, AS A PRODUCTION MODEL IS FINALLY AVAILABLE,BEGIN FOCUSING ON SCALE PRODUCTION OF THE TYPE 2B INSTEAD.
WITH HONOR TO THE EMPRESS,
COMMANDER LESNA UINA OUSKA, PROJECT HEAD