(To Accompany Eric"' The accompanying map of Japanese shipping routes has been substantially revised since the publication of last month!s summary on the basis of completely new data now available• This data is the result of the tracking of actual enemy convoy movements* The principal changes noted from the previous shipping route map are: a) Complete cessation of shipping from Truk and Palau to the Bismarcks. b) Increase in shipping from Palau to the Hollsndia*Wewak area, c) Increased shipping from the Empire into the Caroline (Palau-Saipan-Truk) bases. d) Increased shipping into the Mandates from Balikpapan, e) Increased shipping into Halmahera and transshipments from there to the Manokwari-Sarmi and Ambon-Kai Island areas* f) Increased shipping between Singapore and Balikpapan. g) Reduction of snipping between Singapore and Java* h) Elimination of the Empire-Singapore traffic through the Gulf of Siam, adopted earlier as a protection against Allied submarines. The following routes are shown on the accompanying map in their relative importance: HEAVIEST 1 Singapore - Empire (via Saigon-Hongkong) 2 Singapore - Empire (direct) 8 Singapore - Balikpapan 19 Davao - Halmahera 23 Halmahera •- Manokwari 26 Empire - Palau 27 Palau - Hollandia 31 Empire - Truk 32 Empire - Saipan INTERMEDIATE 3 Singapore - Empire (via Manila) 4 Singapore - Davao 13 Balikpapan- Palau 15 Empire - Davao (via Manila) 21 22 Halmahera - Ambon ! 33 Manokwari - Sarmi 34 Hollandia - Wewak LIGHTEST 5 Singapore - Miri 6 Singapore - Batavia 7 Batavia •-- Padang 9 Batavia - Sourabaya (via Semarang) 10 Sourabaya - Koepang (via Soemba) 11 Sourabaya - Balikpapan 12 Sourabaya - Balikpapan (via Macassar) 14 Macassar - Ambon (via Kendari) 16 Philippines (Inter-island) 17 Manila - Palau 18 Davao «- Menado 20'Davao - Palau 24 Halmahera - Babo 25 Ambon - Kaimana - Selaroe 28 Saipan 29 Palau 30 Palau SOUTHWEST PACIFIC AREA GENERAL HEADQUARTERS SOUTHWEST PACIFIC AREA Military Intelligence Section General Staff JAPANESE SHIPPING ROUTES 1-31 MARCH 1944 FRENC H INDO­ CHIN A GAFERUT NAMONUITO IS OLOL. • WEST FAYU . • PIKELOT ' MINDANAO •OUMARAO LAMOTREK .• PULAP DAVAO MALAY PENINSULA LIGHTEST TRAFFIC INTERMEDIATE TRAFFIC HEAVIEST TRAFFIC •GREENWICH FIGURES REFER TO ROUTE NUMBERS (SEE ACCOMPANYING LIST) ST. MATTHIAS GRR ,- HERMIT IS. <*>MUSSAU ADMIRALTY IS. OELA is rT*^ DUTCH NEW GUINEA BOEROE BISMARC K SEA TIMOEKA BANDA SEA BOUGAINVILLE) BUI N SOLOMONS SEA ARAFURA SEA MILNE BAY LOUISIADE INDIA N OCEA N 120 130 140 150 160 CHUNGKING RED FIGURES- NAUTICAL MILES BLUE FIGURES­ HOURS AT 10 KNOTS .CHANGSHA N A BLACK FIGURES-HOURS AT 20 KNOTS GENERAL HEADQUARTERS SOUTH WEST PACIFIC AREA rOOCHOW VBONINS Military Intelligence Section General Staff o MARCUS ID. SURFACE TIME-SPACE FACTORS / /FORMOSA)/ BURMA AKYAB MARIANA : OR LADRONE <?SAIPAf\ IS. PHILIPPINE IS . WANDAMAN IS. \ \ ,.\ CHINA 0 MARSHALL IS. CA R |66fc. I N E 07 RUK IS . .V :. .I ••V. o •"PONAPE a JALUIT ISA' .HELEftJ ID ^GILBERT SUIyiATR W [GUINEA RltAIN OHBOUGAINVILL ELLlCE IS.°­ SOEM$A .- . BRIDES FIJI ! S > ; NEW J ST RA L I A CALEDONI II X • x S TP R X \ GA X X to X X NO e I M X M X X - x s _ x M - X X a X XI X X u _x X X I CO CO SO CO X 0) CO • FARALLON OL PAJAROS NOTE: NORTHERN BOUNDARY OF BABUYAN IS. 2ND AREA a 8TH AREA 0 ARMIES UNKNOWN. APARRI •"*•». SOUTHWEST PACIFIC AREA />PA&AN • ALAMA6UAN GENERAL HEADQUARTERS *GUGUAN UZO N SECOND SOUTHWEST PACIFIC AREA LRIANA S <SARIGAN SECOND XX X AREA • ANATANAN Military Intelligence Section AREA X I V General Staff PHILIPPINE TENTATIV E .0SAIPAN » TINIAN ISLAND S •AGIGUAN COMMAN D BOUN DARIE S 31 MARCH 1944 FRENC H STATUTE MILES IN DO ­ CHIN A V SANTA ROSA ISLAND S 100 0 100 200 300 400 500 SCALE AT THE EQUATOR JLITH IS. •I A IS 'YAP . GAFERUT MAGU R x x x x N AMONUITO,S : FARAULEP OLOL. -PISARAS . /•HAUL IS. KAYANGEL . S E CONDI -.A N C -WEST FAYU . ­ su PALA U IS. .PIKELOT ' 3 L A N D S .OLIMARAO /7MUKERU LAMOTREK fPULAP •OROLUK •••WOLEAIIS. EL.ATO " SATAW0 L • PULUWAT °TRUK IS. • PAKIN IFALIK IS. •KiinKU0 Pp 'NAMA >LOSAP .,OP0NAP E EAURIP1 K -PULUSUK ANT SENYAVIN IS MO; vNAMOLUK ETAL > NGATIK NOMOI :• "LUKUNOR XXX " SATAWAN PULO ANNA \KARAKEU)NG SOUTHERN SECOND •MERIR ^f-.AREA AREA NUKUORO SANGI TOBI . » HELEN XX X ISLANDS •o ••"ASIA IS. •. MAPIA IS lALMAHERA X XX XI X * I I EQUATOR ^ 0 ; LLJ MOLUCCA MAI 0KWAR1 SCHOUTEN l& SEA ^v.,, NINIGO GRR ST. MATTHIAS GRP •^MUSSAU Y Y X X 'Cz>o>i XX X "' WAKDE I ADM JALTY IS. EIGHT H X I X y y y HILLITC LEBES 1 IEW HANOVE XVI I I | TABAR GR <3"LIHIR.GP NEW IRE i«D*- BOEROE I S MARC K SE A NORTH EAST ^MANA M «*FENI JAVA SEA ^^ ^ XXX NEW GUINEA BANDA SEA KAI IS JMADANG XX X XX X Q LONG I C.GLOUCESTER X V I ^NEW BRITAIN GTONG tf JAVA ^FINSCHAFEN GASMATA BOUG KANGEAN I FLORES SEA PAPUA V TREASURY? SOLOMONS SEA VELLA LAVELL ARAFURA SEA ':• ^TROBRIAND l& BUNA 0 -vGOODENOUGH ID. >3tsV00DLARK ID. < 'XSOEMBA v —( _ \5\WAINGAP0E GUADALCANAL^ 10 O CHRISTMAS 10. MILNE BAY LOUISIAD E ARCHIPELAGO TAGULA INDIA N OCEA N 100 SOUTHWEST GENERAL HEADQUARTERS SOUTHWEST PACIFIC AREA MARIANAS ISARIGAN - ANATANAN Military Intelligence Section 33 I.M.? General Staff PHILIPPINE n0SAIPAN B TINIAN ENEMY GROUND DISPOSITIONS •AGI6UAN 31 MARCH 1944 rUTE MILES =a—— 100 200 300 400 500 SCALE AT THE EQUATOR Reproduced by Engineer Intelligence Section, OCE, GHG, SWP£ PALAWANyWPUERTO PRINCESSA X3L, OLOL. >PISARAS . .-'-HALL IS. ' ^;N 3c 5 ? ... A R o • WEST FAYU \ NGULU IS. -SOROL •PIKELOT • OLIMARAO LAMOTREK ;PULAP ..'WOLEAIIS. EL.ATO ' SATAW0 L 'PULUWAT IS. TALAUR IS. AKARAKELONG MALAY PENINSULA CELEBES SEA MOLUCCA \ 0 >KWARI S SEA [RAM S CERAM DUTCH NEW GUINEA NG l.<0 C.GLOUCESTER SOLOMONS SEA f^TROBRIAND IS. iOOOENOUGH ID. <5>^VOOOLARK ID 3UADALCAN MILNE BAY 100 105 no 115 120 125 130 I3S 140 145 150 155 160 165 lltfU 23 lll I URACAS 20 • MAUG • WAKE ID. APARR I LAOAG. PAGAN VIGAN. -TUGUEGARAO MARIANAS IS. BAGUIO LINGAYANo QSA N MANUEL SOUTH 1070 CLARK F.ELD^ ™ , SAIPAN 15 MARIVELES^ TINIAN 5 MANIL/P* NICHOLS FIELD*1 PHILIPPINE BATAN6AS**TAN f • LUCENA ATATE LIP oNAGA CHINA CALAPAN* . LEGASPI OBULAN _iACLOBAN SAN JOSE • tgABRICA • SEA ILOILO* 2-BACOLOD MARSHALL* iO OPOlif LAHUG FAIS 0 PUERTO SIPALAYo CEB U O9ILAA PT. KAIJIEN YAP PRINCESA • WOTJE DUMAGUETE PANGINOMAN fTAROA CAGAYAN JSLANDS Q ( DEL MONTE TA0UM BABELTHUAP (} _TARAKABESAN PARAM • • WOLEAI ]»SAMAL p ELELm AMAKARAKARiv/» U (EIL MALK) DUBLQ N % LANGAR ID. KUDAT# TEN MAL o'PADADA TRUK CAROLINE PONAPE m.-EMIDJ # MIL I JESSELTON. .SANDAKAN ENYBOR • JALUIT RANAU LABUAN ID.* LAHADATU • SATAWAN • KUSAIE KENINGAU ^TAWITAWI TAWA0 L E B E S SE A NATOENA kTARAKAN - IS. n HELEN ID. PITOE (DOROEBA) MAPANGET-, LELA*.S.T I GILBERT KUCHING GA LANGOANt -»wm SINKAWANG U 9 L. TONDANO S KAOE©o « GREENWICH ISLANDS BORNEO OBAc L0L0BAT A SAMARINDA H E. SAMARINDA H W.#» •NAURU ID. MELAK WEST MANOKWARI ~l LABOEH JEFMAN. 9 KAMIRI SAMATEcf i,n am #MUSSAU ID. WAREN bMAFFIN /CELEBES BOELA I SAGAN HOLLANDIA,. AM I KAVIENG#% PANAPAI CYCLOP??* I 1BALGA I •; > T -WEWAK DYAUL ID.^ MALIMPOENGi ( wmtATI, 9NABIRE SENTANI GENERAL HEADQUARTERS NAMLEA3r BLUP BLUP ID. o NAMATANAt • ^KENDARI L UTAROM' *ETNA BAY JA WAR •w DR SOUTH WEST PACIFIC AREA • POMELAA SEPIK R. NUBIA I A V A SEA TIMOEKA MACASSAR ^»MANDAI Military Intelligence Section ALEXISHAFEN I-!* * ^BUKA LIMBOENG# #BAOE BAOE DOEROA-JWELAH QQQQ • MADANG H0SK.NS.OP0RAP0RA General Staff BOELOEDOWANG* BATAVIA o B A N u A LANGGOERCTCEAL/TABERFAN^^RCEAL/TABERFA E NEW GUINEA KEI^IAJORAN. WAIinlAT 1 a GASMATA KAU0JAT FAAN*1T ALARDJIR ENEMY AIR BASES T^IUTAN t .• SEMARANG^_OERABAJA ^ . LETFOEAR- ODOKABARA T KARA** KAHILI F L 0 R E S * SEA ?RANGAN« FA|S1€ *BALLALE SOUTH WEST PACIFIC AREA BANDOE N 6 # S O ERAKART ; . Zvfi£S£ PERAK ^AN,MBA R IS " SOLOMON IS 31 MARCH 1944 DJOKJAKARTA*. • . .MALANG ^^^ * SAUMLAKSAUmi I ?.o ^ \ DILLI «w DEN PASAR MERE i an C. LORE '?=». ft. ATAMBOEA FUILORO WAINGAPOE IO \ . KOEP EET ' |C^^ . 10 CHRISTMAS I KOEPANG (GOLF c < NAUTICAL MILES • OPERATIONAL AIRDROMES 0 100 300 400 500 800 ONEMBRALA O AIRDROMES UNDER CONSTRUCTION \\\\\\\\\\vw \v 15' /«• <5> SEAPLAr ' io­ 5" O' 5 5* 10 . fJITfTTj ,10' 1° //////// \ 15* 23.£* //////////L. 100 NAUTICAL MILES - 115-15 STATUTE MILES 15 =Lx 100 105 110 115 120 125 130 135 140 160 ARMY AIR SERVICE AIR ARMY SOUTHWEST PACIFIC AREA Oo | AIR DIVISION GENERAL HEADQUARTERS SOUTHWEST PACIFIC AREA Military Intelligence Section NAVAL AIR SERVICE General Staff ENEMY AIR ORDER AIR FLEET OF BATTLE SOUTH WEST PACIFIC AREA AIR FLOTILLA 31 MARCH 1944 FRENC H OO|AIR GROUP I N DO - CHIN A ••• SANTA ROSA MICRONESIA F B R TTL 300 329 74 703 PALAWAN/qPUESTO PRINCESS* OCI3-* PHILIPPINE N.E.I. (LESS SUMATRA) THMM m ——— — —————— — —*«^ MALAY F B R T T PENINSULA 239 161 129 CELEBES SEA N.E. SECTOR LAN D * V TANGA IS. kVEWAK tf W GUINEA BISMARC K SE A T/OEKA\ \ /tKARKAR 'ONG 1-0 C.GLOUCB^ER TREASURY? CHOISEUL VELLA LAVELLA^ v "EORGIA <;C3/_ ^ •** ­ ARAFURA SEA f^TROBRIAND IS. 5000ENOUGH ID. ^tiVOOOLARK 10. NDIAN OCEAN 100 (To Accompany Encl 16) ENEMY MERCHANT SHIPPING 31 March.. 1944 The accompanying graph is based on aircraft sightings of merchant tonnage in the North East New Guinea area during the month of March. TONNAGES ESTIMATED TO HAVE ENTERED NORTH EAST NEW GUINEA PORTS March 1944 PORT TONS Hansa Bay 14,300 Wewak 62,800 Aitape 15,000 Hollandia 103,500 HOLLANDIA 16 - WEWAK Mill General Staff AITAPE f i O p o f- i -••->•.- f p q Ur ™ £_ u b Li ii.l d I .;; o HANSA BAY MERCHANT SHIPPING NORTH EASTERN SECTOR TONNAGE 31 MARCH 1944 35 000 30 000 25000 20 000 15000 10 000 5000 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 20 21 22 23 24 MARC H 194 4 K \ (To Accompany End 17) ENEMY 31 March 1944 The accompanying graph showing shipping in certain North Western Sector ports during March is based largely on sources other than sightings, except in the case of the figures for Manok­ wari and Halmahera on 23 March when aircraft reconnaissance observ­ ations were available.