U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 4 PUBLICATION DATE: 09/05/2001 Station ID: 1612404 SUPERCEDED DATE: 04/21/2003 Name: FORD IS. FERRY DOCK, PEARL HBR HAWAII NOAA Chart: 19013 Latitude: 21° 22.1' N USGS Quad: PEARL HARBOR Longitude: 157° 56.4' W To reach the tidal bench marks from Honolulu, take H-1 West and take the first exit after "Hickam AFB/Pearl Harbor" which is the "Arizona Memorial/Alcoha Stadium" exit. Stay in the left lane which puts you on Kam Highway. On the left you will pass the Makalapa and Haalawa Gates to Pearl Harbor and then you will turn left at a sign "USS Arizona Next Left". The gauge was located about 70 m (230 ft) west of the Ford Island Perry USN Security shack on the "COMTHIRDFLT Boat Dock". The bench marks were located in the vicinity. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 2404 A 1987 DESIGNATION: 161 2404 A MONUMENTATION: Tidal Station disk VM#: 16499 AGENCY: National Ocean Service (NOS) PID: SETTING CLASSIFICATION: Concrete foundation The primary bench mark is a disk set in the concrete foundation of the northern of two hydraulic pistons which operate the ramp for the Ford Island Ferry, 6 m (20 ft) east of the water's edge, 0.30 m (1 ft) south of the south edge of the concrete wall surrounding hydraulic piston, and 0.15 m (0.5 ft) east of the west edge of the concrete foundation. BENCH MARK STAMPING: 2404 B 1987 DESIGNATION: 161 2404 B MONUMENTATION: Tidal Station disk VM#: 16500 AGENCY: National Ocean Service (NOS) PID: SETTING CLASSIFICATION: Concrete storm drain The bench mark is a disk set in the SE corner of a 1.37 m x 1.37 m (4.5 ft x 4.5 ft) concrete storm drain, 64 m (210 ft) NE of the ferry dock for the Ford Island Ferry, 58 m (189 ft) east of the inshore end of the COMTHIRDFLT Boat Dock, 55 m (180 ft) SE of the WII USS BOWFIN submarine moorage, 25 m (82 ft) NW of a security shack at the entrance to the ferry dock, and 0.09 m (0.3 ft) south of a cyclone fence.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 4 PUBLICATION DATE: 09/05/2001 Station ID: 1612404 SUPERCEDED DATE: 04/21/2003 Name: FORD IS. FERRY DOCK, PEARL HBR HAWAII NOAA Chart: 19013 Latitude: 21° 22.1' N USGS Quad: PEARL HARBOR Longitude: 157° 56.4' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 2404 C 1987 DESIGNATION: 161 2404 C MONUMENTATION: Tidal Station disk VM#: 16501 AGENCY: National Ocean Service (NOS) PID: SETTING CLASSIFICATION: Concrete foundation The bench mark is a disk set in a foundation for the guard shack at the entrance to the Ford Island Ferry Dock, 23.56 m (77.3 ft) SE of bench mark 2404 B 1987, 1.89 m (6.2 ft) west of the door to the guard shack, and 0.46 m (1.5 ft) east of the edge of the curb.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 4 PUBLICATION DATE: 09/05/2001 Station ID: 1612404 SUPERCEDED DATE: 04/21/2003 Name: FORD IS. FERRY DOCK, PEARL HBR HAWAII NOAA Chart: 19013 Latitude: 21° 22.1' N USGS Quad: PEARL HARBOR Longitude: 157° 56.4' W T I D A L D A T U M S Tidal datums at FORD IS. FERRY DOCK, PEARL HBR based on: LENGTH OF SERIES: 91 HWS and 91 LWS TIME PERIOD: January 30, 1987 - March 22, 1987 TIDAL EPOCH: 1960-1978 CONTROL TIDE STATION: 1612340 HONOLULU, HONOLULU HARBOR, OAHU ISLAND Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 0.616 MEAN HIGH WATER MHW = 0.472 MEAN SEA LEVEL MSL = 0.275 MEAN TIDE LEVEL MTL = 0.261 MEAN LOW WATER MLW = 0.049 MEAN LOWER LOW WATER MLLW = 0.000 Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 2404 A 1987 1.063 0.591 2404 B 1987 1.503 1.032 2404 C 1987 1.774 1.302
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 4 PUBLICATION DATE: 09/05/2001 Station ID: 1612404 SUPERCEDED DATE: 04/21/2003 Name: FORD IS. FERRY DOCK, PEARL HBR HAWAII NOAA Chart: 19013 Latitude: 21° 22.1' N USGS Quad: PEARL HARBOR Longitude: 157° 56.4' W D E F I N I T I O N S Mean Sea Level (MSL) is a tidal datum determined over a 19-year National Tidal Datum Epoch. It pertains to local mean sea level and should not be confused with any other fixed island datum. This tide station location has a local island datum. Island datums are specific fixed geodetic datums whose elevation relationship to local MSL and other tidal datums may not be consistent from one location to another. The Vertical Mark Number (VM#) and PID# shown on the bench mark sheet are unique identifiers for bench marks in the tidal and geodetic databases, respectively. Each bench mark in either database has a single, unique VM# and/or PID# assigned. Where both VM# and PID# are indicated, both tidal and geodetic elevations are available for the bench mark listed.