Jacob Luckenbach Wreck

General Comments

HISTORY NM31/53(8/1/53)-- WRECK, BUOYS ESTABLISHED. THE HAVISIDE CO. ADVISES THAT TWO SMALL CAN BUOYS PAINTED ALUMINUM HAVE BEEN TEMP. EST. 430 FEET APART AT BOW AND STERN OF THE WRECK OF THE S.S. JACOB LUCKENBACH. APPROX. POS. 37-40-30N, 122-47-30W. MARINERS ADVISED TO KEEP CLEAR. NM32/53(8/8/53)-- WRECK OF S.S. JACOB LUCKENBACH (STEEL HULL) HAS BEEN CHAIN DRAGGED TO A DEPTH OF 10 FMS. (SUPERSEDES NM31/53). BUOY MARKING WRECK HAS BEEN REMOVED. APPROX. POS. 37-40-24N, 122-47-36W. LNM122/56 (11/20/56)-- DEPTHS OF LESS THAN 30 FT. REPORTED OVER CERTAIN PORTIONS OF THE WRECK OF THE JACOB LUCKENBACH LOCATED IN APPROX. LAT. 37-40.5N, LONG. 122-47.5W. CL721/53--INFO. ABOVE MADE INTO NOS CHART LETTER. CL664/68--CGD TWELVE TO COMDT. COGARD. DRAGGING AND SCUBA OPS. INDICATE MIN. DEPTH OF AT LEAST 60 FT. OVER OLD WRECK CHARTED IN POS. 37-40.3N, 122-47.6W. DIVERS REPORT BASED ON SINGLE CONTACT WITH WRECK KINGPOST INDICATES WRECK IS IN HEELED-OVER POSITION. ECHO SOUNDINGS INDICATE WRECK LYING ABOUT 300 DEGS. TRUE HEADING. RECOMMEND SEA LANES DATA BE PUBLISHED AS PROPOSED AND CHARTS PRINTED. LNM26/68(4/17/68)-- HYDRO. SURVEY INDICATES OBSTRUCTION 48 FT. BELOW SURFACE. LESSER DEPTHS POSSIBLE. CAN, ORANGE/WHITE VERT. STRIPES, TEMP. EST. IN APPROX. LAT. 37-40.3N, 122-47.6W UNTIL COMPLETION OF SURVEY. LNM36/68(5/10/68)-- TWO INT. ORANGE BUOYS, PREVIOUSLY TEMP. EST. IN APPROX. POS. 37-40.3N, 122-47.6W, DISCONTINUED. CAN BUOY, ORANGE/WHITE VERT. STRIPES WILL REMAIN IN ABOVE POS. FOR ABOUT 1 WEEK. LNM37/68(5/14/68)--CAN BUOY ABOVE DISCONTINUED. NM18/68--REPEATS ABOVE INFO. CL1033/68--"MINUTE MEMO" C32 TO C323 DATED 6/19/68. CG WIRE DRAG ON 6/17/68 HUNG AT 73.5 FT., CLEARED 69.5FT (PREDICTED) IN POS. LAT. 37-40.55N, LONG. 122-47.61W. .15 MILES N OF OLD CHARTED POSITION. CONSIDERED GOOD AND MUCH BETTER THAN APRIL POS. (ABOVE CL664/68) WHICH PLOTTED 0.1 S OF OLD CHARTED POS. LNM50/68(6/27/68)--USC&GS ADVISES THAT A HYDRO. SURVEY (COAST GUARD) OF WRECK CHARTED IN APPROX. POS. 37-40.3N, 122-47.6W INIDCATES A PRELIMINARY CLEARED DEPTH OF 69 FT. PRESENTLY CHARTED AS CLEARED TO 11 FATHOMS AND LABELED WK ON CHART 18645 EDITION DATED 11/24/84. CL659(85)--SEE MESSAGE UNDER DESCRIPTION. LNM31/85--THE WRECK OF THE JACOB LUCKENBACH,PRESENTLY CHARTED AT POS. LAT. 37-40-33N, LONG. 122-47-37W WITH LD OF 11 FMS. HAS BEEN SURVEYED AND FOUND TO BEAR 162 DEG TRUE 347M FROM CHARTED POS. AT POS. LAT.37-10-22.3N, LONG. 122-47-32.2W. LD OF 9.5F MLLW WAS OBSERVED USING AN ECHO SOUNDER. (ENTERED 2-24-86 MCR) DESCRIPTION **** MESSAGE, NOAA SHIP DAVIDSON TO 12TH CGD, ALAMEDA, CA, 11700Z JULY 1985. JACOB LUCKENBACK (SIC) LOCATED (RAYDIST CONTROL) IN LAT. 37-40-22N, LONG. 122-47-32W. BEARS 347 METERS, 162 DEGS. FROM CHARTED POS. (CHART 18645, 19TH ED.) AND 10.05NM, 99 DEGS. FROM FARALLON LIGHT (LLNR 52). LORAN-C TD'S (9940 CHAIN) 16034.2W, 27168.3X, AND 43165.2Y. MINIMUM ECHO SOUNDER DEPTH WAS 9FMS. (PREDICTED MLLW). WIRE DRAG OR DIVE LD NOT ATTEMPTED. WILL RETURN FOR LD IN SEPT., 1985 IF HEADQUARTERS CONCURS. 24 NO.1156; CARGO, 7869 GT; SUNK 7/53 BY MARINE CASUALTY; POSITION ACCURACY 1 MILE; LEAST DEPTH 30 FT (SOURCE UNK) LOCATED 10/30/53 (SOURCE UNK) **** MEMO, CONFIRMATION OF RADIO MESSAGE R111700Z DATED 7/12/86 (SEE MESSAGE). ECHO SOUNDER DEPTH OBSERVED OVER THE WRECK WAS 9.5 FATHOMS AT MLLW CORRECTED FOR PREDICTED TIDES IN POS. LAT.37-40-22.3N, LONG. 122-47-32.2W THIS IS THE LATEST SOURCE AS REFLECTED IN THE HEADER RECORD AND ON THE UPCOMING NAUTICAL CHARTS (ENTERED 2/24/86 MCR). **** INFORMATION OBTAINED FROM SAN FRANCISCO MARITIME MUSEUM LIBRARY ON THE JACOB LUCKENBACH: REG. NO.246389, GT 7869, NT 4615, LENGTH 468.5 FT, BEAM 69.6 FT, DRAFT 29.5 FT, BUILT IN PASCAGOULA, MISS. IN 1944. (ENTERED 2/24/86 MCR) SURVEY REQUIREMENTS FULL--VERIFY OR DISPROVE THROUGH 400% SIDE SCAN SONAR SEARCH OR WIRE DRAG INVESTIGATION, .5NM MIN. RADIUS, LD REQUIRED. NOT DETERMINED