TASSAFARONGA November 1942

Transcription

1 TASSAFARONGA November 1942 Background: The last surface action off Guadalcanal was sparked by a Japanese resupply mission. As the Americans increasingly dominated the waters around the island, the Japanese were reduced to using destroyers to run supplies and reinforcements down the Slot. While these could carry only a small payload, they were fast enough to dash to and away from the island under cover of night. On November 30, a USN force was positioned to intercept one of these runs. Forces: United States Navy Division 1: Fletcher (Fletcher - flag) Rear Admiral Carelton Perkins (Mahan) Wright Maury (Gridley) Drayton (Mahan) Division 2 Minneapolis (New Orleans - flag) New Orleans (New Orleans) Pensacola (Pensacola) Honolulu (Brooklyn) Northampton (Northampton) Division 3 Lamson (Mahan - flag) Lardner (Bristol) Nihon Kaigun Independent Ship: Takanami (Yugumo) Rear Admiral Tanaka Raizo Division 1: Naganami (Yugumo - flag) Division 2: Makinami (Yugumo - flag) Oyashio (Kagero) Kuroshio (Kagero) Kagero (Kagero) Division 3: Kawakaze (Shiratsuyu) Suzukaze (Shiratsuyu) Set-up: N^ The battle area is restricted. There is land on the south edge of the area, 28 inches from the north edge, extending due west for 12 inches from the east edge. The land line then extends from this point northwest at a 45 degree angle for 24 inches, then southwest along the 225 degree line. This is the coast of Guadalcanal. A 4 inch circle of land is centered on a point 19 inches from the east edge and 6 inches from the north edge. This is Savo Island. The American friendly edge is the east edge. The Japanese friendly edge is the west edge. The American formation is complicated by being caught in mid-maneuver. The cruiser line had been on a course of 300 degrees, but had then executed a 30 degree ships left. Its course at the start of the scenario is 270 degrees (due west). The two destroyer divisions are also on a 270 degree course. Division 1 is north of the cruisers and Division 3 is south of it. Both divisions are disposed so that a ships right 30 degrees by the cruisers and a column right 30 by each destroyer division would put all ships in one continuous line on a 300 degree course. To set up the USN ships place them in a continuous line on a course of 300 degrees with the divisions in order and the Fletcher 13 inches from the north edge and 11 inches from the east edge. Next rotate each cruiser 30 degrees around its bow so that it is on a course of 270 degrees. Then do the same for each the Fletcher and the Lamson. Finally, line the other ships of the destroyer divisions up directly behind their flagships. The Japanese Division 1 begins on a course of 150 degrees in line ahead, 11 inches from the north edge and 22 inches from the east edge. The other divisions are directly behind it, in order. Takanami is 2 inches to the east of main formation, even with Naganami. Victory Conditions: Victory is decided on points: a) 2 per cruiser sunk; b) 1 per destroyer sunk; c) 1 point per cruiser left DIW. Special Rules.

2 1. All USN ships but the Maury, Drayton, Lamson, Lardner and Pensacola have SG radar. The named ships have SC radar. All USN ships with SC radars have Mk 3 or Mk 4 fire control radars. All others have Mk 8 or Mk 12 fire control radars. 2. Because the USN ships are a scratch team that had not exercised together, they must plot their division movement one turn in advance. 3. The Japanese are alert. 4. Only the Takanami and Naganami are carrying torpedo reloads. 5. Once the action begins, Takanami is subject to independent movement unless and until she joins with Naganami. 6. The visual sighting base is 3, with a visibility state of the quarter moon is below the horizon. 7. Savo Island blocks both radar and visual spotting attempts. Outcome: Once again American gunfire was matched with Japanese torpedoes. This time the torpedoes won. The Japanese torpedoed four out of five cruisers, Northampton sinking the next day and the others being saved. The Americans sank Takanami.

3 Brooklyn Class Heavy cruiser Main Battery: 6 inch guns in 5 triple turrets 24 inches Fore and aft Secondary Battery: 5 inch guns in 8 single mounts 15 inches Fore and aft Speed boilers 4 engines Flotation Total: 70 DIW: 35 Sinking: 48 Torpedo : ± : ±2 24 : ±3 Heavy cruiser size, but light cruiser guns. Class included Brooklyn, Honolulu and Boise. Fuel Oil Forward Void Main Magazine A Main A Main Magazine B Main B Main Magazine M Main M Plot/CIC 32 Bridge, Foward Secondary Director, AAMGs Plot/CIC 33 Forward Primary Director, Secondary 1 or 2, Bridge, AAMGs Boiler Room 1 34 Search Radar Boiler Room 2 35 Funnel, Secondary 3 or 4 Boiler Room 3 36 Searchlights 1 or 2 Boiler Room 4 41 Secondary 5 or 6, Searchlights 3 or 4 Boiler Room 4 42 Secondary 7 or 8, Funnel Engine Room Void Engine Room 2 46 AAMGs, Aft Main Director Engine Room 2 51 AAMGs, Aft Secondary Director Main Magazine X Main X Main Magazine Y Main Y Fuel Oil 2, Propshafts 1 or 2 61 Catapult 1 or 2, Hanger Fuel Oil 2, Propshafts 3 or 4 62 Catapult 1 or 2, Hanger Steering Catapult 1 or 2, Hanger Void Hanger FO1 PM PM PM PL BR1 BR2 BR3 BR4 ER1 ER2 PM PM FO2 ST V 4FP A B M 2FP B1 B3 B5 B7 E1 E3 X Y 2FP 1FP 1FP 2FP 2FP 2FP B2 B4 B6 B8 E2 E4 2FP 2FP 7FP 7FP 7FP 7FP 11FP 11FP

4 New Orleans Class Heavy cruiser Main Battery: 8 inch guns in 3 triple turrets 32 inches Fore and aft Secondary Battery: 5 inch guns in 8 single mounts 14 inches Fore and aft Speed boilers 4 engines Flotation Total: 67 DIW: 34 Sinking: 44 Torpedo : ± : ±2 24 : ±3 Class included New Orleans, Astoria, Minneapolis, Tuscaloosa, San Fransisco, Quincy and Vincinnes. Fuel Oil Void Aviation Gas 15 Void Main Magazine A Main A Main Magazine B Main B Plot/CIC 26 Secondary 1 or 2, AAMGs, Bridge Boiler Room 1 31 Forward Secondary Director, AAMGs, Bridge Boiler Room 1 32 Forward Main Director, AAMGs, Bridge Boiler Room 2 33 Secondary 3 or 4 Boiler Room 2 34 Funnel Boiler Room 3 35 Secondary 5 or 6, Searchlight 1 or 2 Boiler Room 3 36 Funnel, Searchlight 3 or 4 Boiler Room 4 41 Secondary 7 or 8 Boiler Room 4 42 Aircraft, Catapult 1 or 2 Engine Room Aircraft, Catapult 1 or 2 Engine Room 2 46 Aircraft, Catapult 1 or 2 Engine Room Hanger, AAMGs Fuel Oil 2 53 Aft Primary Director, AAMGs Main Magazine X 54 Aft Secondary Director, AAMGs Main Magazine X Main X Propshaft 1 or 2, Fuel Oil 3 61 Main X Propshaft 3 or 4, Fuel Oil 3 62 Void Fuel Oil Void Steering 65 Steering Void 66 Void BR1 BR2 BR3 BR4 ER1 ER2 FO1 AG AM BM PLT B1 B3 B5 B7 E1 E3 FO2 YM FO3 ST V 2FP 1FP 3FP 3FP 2FP B2 B4 B6 B8 E2 E4 2FP 3FP 2FP 1FP 0FP 7FP 7FP 7FP 7FP 10FP 10FP

5 Northampton Class Heavy cruiser Main Battery: 8 inch guns in 3 triple turrets 32 inches Fore and aft Secondary Battery: 5 inch guns in 8 single mounts 14 inches Fore and aft Speed boilers 4 engines Flotation Total: 61 DIW: 31 Sinking: 40 Torpedo : ± : ±2 24 : ±3 Class of 6 included Northampton, Houston and Chicago. Fuel Oil Void Aviation Fuel 14 Void Fuel Oil 15 Void Main Magazine A Main A Main Magazine B Main B Plot/CIC 26 Secondary Director, Bridge Boiler Room 1 31 Forward Main Director, AAMGs, Bridge Boiler Room 1 32 Bridge Boiler Room Funnel Engine Room Aircraft, Catapult 1 or 2 Engine Room 1 42 AAMGs, Hanger Boiler Room AAMGs, Funnel Boiler Room 2 45 Secondary 1 or 2 Boiler Room 2 46 Secondary 3 or 4 Engine Room 2 51 Secondary 5 or 6 Engine Room 2 52 Secondary 7 or 8 Engine Room 2 53 Void Engine Room 2 54 Aft Secondary Director, AAMGs, Searchlight 1 or 2 Main Magazine X 55 Aft Main Director, AAMGs, Searchlight 3 or 4 Main Magazine X Main X Fuel Oil 3, Propshaft 1 or 2 62 Main X Fuel Oil 3, Propshaft 3 or 4 63 Void Steering Steering Void 66 Void BR1 ER1 BR2 ER2 FO1 AG FO2 AM BM PLT B1 E1 B3 E3 YM FO3 ST V 2FP 1FP 1FP 3FP 3FP 2FP B2 E2 B4 E4 2FP 2FP 1FP 0FP 12FP 10FP 12FP 10FP

6 Pensacola Class Heavy cruiser Armor +1 modifier Main Battery: 8 inch guns in 2 triple turrets and 2 twin 32 inches Fore and aft turrets Secondary Battery: 5 inch guns in 8 single mounts 14 inches Fore and aft Speed boilers 4 engines Flotation Total: 68 DIW: 34 Sinking: 46 Torpedo : ± : ±2 24 : ±3 First modern 8 inch heavy cruiser for the US Navy. Class included Pensacola and Salt Lake City. Fuel Oil Void Aviation Gas 14 Void Main Magazine A Main A Main Magazine B Main B Fuel Oil 2 25 Secondary Director, Bridge Fuel Oil 2 26 Forward Main Director, AAMGs, Bridge Boiler Room 1 31 Bridge Boiler Room Funnel Engine Room Aircraft, Catapult 1 or 2 Engine Room 1 41 Secondary 1 or 2 Boiler Room 2 42 Funnel Boiler Room 2 43 Secondary 3 or 4 Boiler Room 2 44 Secondary 5 or 6 Engine Room 2 45 Secondary 7 or 8 Engine Room 2 46 Void Engine Room 2 51 Aft Secondary Director, AAMGs, Searchlight 1 or 2 Evaporators 52 Aft Main Director, AAMGs, Searchlight 3 or 4 Main Magazine X Main X Main Magazine Y Main Y Fuel Oil 3, Propshaft 1 or 2 63 Void Fuel Oil 3, Propshaft 3 or 4 64 Void Steering 65 Steering Void 66 Void BR1 ER1 BR2 ER2 FO1 AG AM BM FO2 B1 E1 B3 E3 EVP XM YM FO3 ST V 2FP 1FP 2FP 3FP 4FP B2 E2 B4 E4 2FP 3FP 2FP 4FP 1FP 0FP 12FP 10FP 12FP 10FP

7 Bristol Class Destroyer Armor None Main Battery: 5 inch guns in 4 single mounts 18 inches Fore Torpedoes: 21 inch torpedoes in 1 quintuple mount 6 inches at 5.50 Port and starboard 2 special hits 10 inches at 3.25 Speed boilers 2 engines Flotation Total: 27 DIW: 14 Sinking: 18 Torpedo : ± : ±3 24 : ±5 Many ships in this class. Bristols (DD453 and up) built with 4 guns and 10 tubes, but modified to 4 guns and 5 tubes before they saw war service. Fuel Oil Forward Void Fuel Oil 1 14 Main A Forward Main Magazine Main A Forward Main Magazine Main B Fuel Oil 2 23 Main B Fuel Oil 2 24 AAMGs Fuel Oil 2 25 Bridge Fuel Oil 2 26 Main Director, Bridge Boiler Room 1 31 Search Radar Boiler Room Funnel Boiler Room 1 34 Torpedo A Engine Room Torpedo A Boiler Room Funnel, AAMGs Boiler Room 2 43 Void Boiler Room 2 44 Searchlight Engine Room 2 45 Void Engine Room AAMGs Aft Main Magazine 52 AAMGs Aft Main Magazine Main X Fuel Oil 3, Propshaft 1 or Main Y Fuel Oil 3, Propshaft 1 or Void Steering Steering FO1 MM FO2 BR1 ER1 BR2 ER2 MM FO3 ST 1FP A&B 3FP B1 E1 B3 E2 XY 2FP 1FP 1FP B2 4FP B4 4FP 1FP 5FP 5FP

8 Fletcher Class Destroyer Armor None Main Battery: 5 inch guns in 5 single mounts 18 inches Fore Torpedoes: 21 inch torpedoes in 2 quintuple mount 6 inches at 5.50 Port and starboard 2 special hits 10 inches at 3.25 Speed boilers 2 engines Flotation Total: 30 DIW: 15 Sinking: 20 Torpedo : ± : ±3 24 : ±5 Most numerous class of USN fleet destroyers, with 175 ships in the class. Most early units built with twin 40mm mounts on the after pilothouse and the fantail. Some of the earliest (viz Fletcher) had one 1.1 inch mount on the pilothouse instead. Fuel Oil Void Forward Main Magazine Main A Fuel Oil Main B Fuel Oil 3 25 Bridge, AAMGs Fuel Oil 3 26 Bridge, Main Director Boiler Room 1 31 Search Radar Boiler Room Funnel Engine Room Torpedo A Boiler Room 2 41 Searchlight 1 or 2, Funnel Boiler Room Torpedo B Boiler Room 2 44 AAMGs, Torpedo B Engine Room 2 45 AAMGs, Main M Engine Room 2 46 Main M Engine Room 2 51 Main M Aft Main Magazine 52 AAMGs Aft Main Magazine Main X Fuel Oil Main Y Void, Propshaft 1 or Void Steering Steering [,AAMGs] FO1 PM FO2 FO3 BR1 ER1 BR2 ER2 PM FO4 V ST 1FP A&B FO FO B1 E1 B3 E2 MXY 3FP 1FP 1FP 1FP 2FP 2FP B2 4FP B4 4FP 1FP 5FP 5FP

9 Bagley/Gridley Class Destroyer Armor None Main Battery: 5 inch guns in 4 single mounts 18 inches Fore Torpedoes: 21 inch torpedoes in 4 quadruple mounts 6 inches at 5.50 Port and starboard 2 special hits 10 inches at 3.25 Speed boilers 2 engines Flotation Total: 27 DIW: 14 Sinking: 18 Torpedo : ± : ±3 24 : ±5 Twelve ships in both classes. Fuel Oil Forward Void Fuel Oil 1 15 Main A Forward Main Magazine Main A Forward Main Magazine Main B Fuel Oil 2 24 Main B Fuel Oil 2 25 AAMGs, Bridge Fuel Oil 2 26 Main Director, Bridge Fuel Oil 2 31 Bridge Boiler Room 1 32 Void Boiler Room 1 33 Search Radar Boiler Room 1 34 Funnel Boiler Room Funnel Boiler Room 2 41 AAMGs Engine Room Torpedo 1 or 2 Engine Room Torpedo 3 or 4 Aft Main Magazine 52 Searchlight Aft Main Magazine 53 AAMGs Aft Main Magazine Main X Fuel Oil 3 56 Main X Fuel Oil 3, Propshaft 1 or Main Y Void, Propshaft 1 or 2 64 Void Steering Steering FO1 FM FO2 BR1 BR2 ER AM FO3 ST 1FP A&B 3FP B1 B3 E1 X&Y 1FP 1FP 1FP B2 B4 E2 1FP 5FP 5FP 9FP

10 Mahan/Dunlap Class Destroyer Armor None Main Battery: 5 inch guns in 4 single mounts 18 inches Fore Torpedoes: 21 inch torpedoes in 3 quadruple mounts 6 inches at 5.50 Port and starboard 2 special hits 10 inches at 3.25 Speed boilers 2 engines Fires Mount: 4 Magazine: 6 Fuel Oil: 4 AAMGs:4 Flotation Total: 29 DIW: 15 Sinking: 20 Explosions Mount: 3 Magazine: 4 Torpedo : ± : ±3 24 : ±5 16 ships in class. Dunlap class, with 2 ships, was similar. As modified in 1942 by removal of a midships 5 inch mount and the installation of additional AAMGs. Fuel Oil Forward Void Fuel Oil Main A Forward Main Magazine 16 Main A Forward Main Magazine Main B Fuel Oil 2 24 AAMGs Fuel Oil 2 25 Bridge Fuel Oil 2 26 Main Director (1-3), Bridge (4-6) Fuel Oil 2 31 Search Radar Boiler Room Funnel Boiler Room 1 34 Torpedo A Boiler Room Torpedo A Boiler Room 2 41 Funnel Engine Room 42 Torpedo 1 or 2 (1-3), Searchlight (4-6) Engine Room Torpedo 1 or 2 Engine Room AAMGs Aft Main Magazine 52 AAMGs Aft Main Magazine Main X Fuel Oil 3 56 Main Y Fuel Oil 3 (1-3), Propshaft 1 or 2 (4-6) Main Y Void (1-3), Propshaft 1 or 2 (4-6) Void Steering Steering FO1 FM FO2 BR1 BR2 ER AM FO3 V ST 1FP A&B 3FP B1 B3 E1 X&Y 2FP 1FP 1FP 1FP B2 B4 E2 1FP 5FP 5FP 9FP

11 Asashio/Kagero/Yugumo Navy Imperial Japanese Navy Date 1942 Class Destroyer Armor None Main Battery: 5 inch guns in 3 twin mounts 18 inches Fore Torpedoes: 24 inch torpedoes in 2 quadruple mounts 22 inches at 6.00 Aft 8 reloads 35 inches at special hits 44 inches at 4.50 Speed boilers 2 engines Flotation Total: 28 DIW: 14 Sinking: 18 Torpedo : ± : ±3 24 : ±5 All three classes were similar in game terms. Ten Asashios, 18 Kageros and 20 Yugumos were built. Use cruiser turn radius for Asashio class. Fuel Oil Void Forward Main Magazine Main A Fuel Oil 2 22 Void Fuel Oil Bridge Boiler Boom 1 25 Main Director, Bridge Boiler Boom 1 26 Void Boiler Boom 1 31 Reload A Boiler Room 2 32 Reolad A Boiler Boom 2 33 Funnel Boiler Boom 2 34 Torpedo A Boiler Boom 3 35 Torpedo A Boiler Boom 3 36 AAMGs Boiler Boom 3 41 Funnel Engine Room 42 Searchlight Engine Room Torpedo B Engine Room 45 Torpedo Director Engine Room 46 Reload B Void 51 Reload B Aft Main Magazine Main X Aft Main Magazine Main Y Propshaft 1 or 2, Fuel Oil Aft Void Steering Steering FO1 PM FO2 BR1 BR2 BR3 ER2 V PM FO3 ST 1FP A FO B1 B2 B3 E1,E2 2FP Y 2FP 1FP 1FP 4FP 3FP 3FP 3FP 6FP 2FP

12 Hatsuharu/Shiratsuyu Navy Imperial Japanese Navy Date 1940 Class Destroyer Armor None Main Battery: 5 inch guns in 2 twin mounts and 1 single 18 inches Fore mount Torpedoes: 24 inch torpedoes in 2 triple mounts 22 inches at 6.00 Aft 6 reloads 35 inches at special hits 44 inches at 4.50 Speed boilers 2 engines Flotation Total: 28 DIW: 14 Sinking: 18 Torpedo : ± : ±3 24 : ±5 Successor classes to the Fubukis and Akatsukis, extensively modified after the original design proved to be unstable. Shiratsuyus were similar, with quadruple torpedo mounts vice the triples, and 8 reloads rather than 6. Fuel Oil Forward Void Forward Main Magazine Main A Fuel Oil 2 22 Void Fuel Oil Bridge Boiler Room 1 25 Bridge, Main Director Boiler Room Void Boiler Room 1 32 Funnel Boiler Room Torpedo A Boiler Room 2 35 Torpedo A Boiler Room 2 36 AAMGs, Torpedo Reload A Boiler Room 2 41 Funnel, Torpedo Reload A Engine Room 1 42 Searchlight Engine Room Torpedo B Engine Room 2 45 Torpedo B Engine Room 2 46 Torpedo Director Engine Room Torpedo Reload B Aft Main Magazine Main M Aft Main Magazine Main Y Propshaft 1 or 2, Fuel Oil Void Steering Steering FO1 PM FO2 BR1 BR2 ER2 ER2 PM FO3 ST 1FP A FO B1 B3 E1 E2 MY 2FP 1FP 1FP 3FP B2 3FP 4FP 4FP 2FP 6FP