GDP Weekly Array Status Update

Composition of the Global Drifter Array on 18-May-2026:

Pacif.Gyre: 523
SIO : 203
Metocean: 176
DBi : 137
NKE : 32
Unknown: 28
TOTAL: 1099



Number of Iridium drifters: 1099

Fraction of array that is Iridium: 100.0 percent

Array size on 11 May 2026: 1099 drifters


Added IDs (4):

300534065825550 300534065826540 300534067033380 300534065958740


Lost IDs (4):

300534061659520 300534063017410 300534063682850 300534065361200


Net change: 4 - 4 = 0

New array size on 18 May 2026: 1099 drifters.


Death rate: 4.5 deaths per 1250 drifters per 7 days (237 deaths per 1250 per year).


Mean age of dead drifters: 723 days. Median: 651 days.


Deplog information for dead drifters (underlined: aground/picked up):

ID WMO# DepDate DepLat DepLon ShipManufacturer Type Prgm


Specification sheet info for dead drifters not in deployment log (underlined: aground/picked up):

ID MANUFACTURER TYPE TRANSMISSION
300534063682850MetoceanSVP3A3
300534065361200Pacific GySVP3A3
300534063017410Pacific GyBD2A3
300534061659520Pacific Gyre SBD 9602