Friday, August 11", 2017 
57:30 Arrival of the science crew at Celtic Explorer. Berth: Schuppen 62, Süd-West- 
Terminal, Am Kamerunkai 5, 20457 Hamburg. 
11:00 Arrival of containers and equipment and mobilisation by use of the local crane. 
14:45 Container loading and crane assistance is finished. 
Preparation of dry and wet labs and installation of sensor systems. 
15:00 Security instructions by the second mate Barry Hooper. 
Saturday, August 12", 201; 
06:30 Sailing. 
08:17 — 08:35 Station STADE: 
RA: Cs-137, Sr-90, H-3, Pu, Am, Cm. GoFlow sampler for Trace metals. 
W&S: Bft. 2-3, 230°, 1011 hPa, Ta = 14.8 °C, overcast. 
11:48 — 12:05 Station MEDEM: 
RA: Cs-137, Sr-90, H-3, Pu, Am, Cm. GoFlow sampler for Trace metals. 
W&S: Bft. 4, 230°, 1010 hPa, Ta = 16.0 °C, overcast. 
14:46 - 15:08 Station GNOO3/ELBE1: 
Secchi depth, CTD profile with rosette sampler and nutrients 
RA: Cs-137, Sr-90, H-3, Pu, Am, Cm. 
W&S: Bft. 5-6, 300°, 1008 hPa, Ta = 18.4 °C, cloudy, Tw= 18.6 °C,S = 32.84 psu. 
15:50: Muster Station exercise. 
17:35 — 17:55 Neuston trawl for visible pollutions (ViP- 
Start: 54° 00.34’ N; 007° 24.99’ E 
End: 54° 00.80’ N: 007° 23.30’ E 
L 
L, 
18:50 — 19:06 Station GNO03A: 
CTD profile with rosette sampler, RA: Cs-137, Sr-90, H-3, Pu, Am, Cm. 
W&S: Bft. 4-5, 280°, 1012 hPa, Ta = 18.0 °C, cloudy, Tw= 18.9 °C, S = 33.33 psu. 
22:08 — 22:23 Station GN007 (Borkumriffgrund): 
CTD profile with rosette sampler. RA: Cs-137, Sr-90, H-3, Pu, Am, Cm. 
W&S: Bft. 5, 300°, 1014 hPa, Ta = 17.8 °C, cloudy, Tw= 19.2 °C, S = 34.18 psu. 
Sunday, August, 13", 2017 
v 01:21 — 01:37 Station GNOO7A: 
CTD profile with rosette sampler. RA: Cs-137, Sr-90, H-3, Pu, Am, Cm. 
W&S: Bft. 3-4, 340°, 1016 hPa, Ta = 16.4 °C, Tw= 18.5 °C, S = 34.57 psu. 
04:31 — 05:15 Station GNO08: 
Secchi depth, Clean-CTD profile with rosette sampler and nutrients. RA: Cs-137. 
Trace metals. 
W&S: Bft. 4, 340°, 1016 hPa, Ta = 16.5 °C, fine, Tw= 18.5 °C, S = 34.57 psu. 
NO samples for Bedford No. 175013, Niskin bottle didn’t closed.