Dive R487
						Dive Plan: Same as for R485 and R486. Primary objective is to obtain vent fluids/filtered samples along eruptive line. Will begin at Mkr-33 and end at Milky Vent area. Suction sampling will also be done at some of these sites.
						Elevator wil be recovered (weather permitting) sometime during the dive.
						Note: Nav fixes not edited in the logs. All fixes were logged, regardless of accuracy. Use the dive plots to determine actual positions.
UTC Hour	Min	Depth (m)	Sub Hdng (deg)	UTM X	UTM Y	Comments	Frmgrbs, Photos, Samples
15	32	1	133	421199	5087374	ROPOS in the water.
15	43	85	256	421199	5087374	test	Dive 487-1
17	6	1519	87	424091	5087593	On the bottom. At Mkr-33. Viewing osmosampler.	Photos 2 - 5
17	7	1521	39	424091	5087593	Osmo Sampler at Mkr-33	Dive 487-2
17	8	1521	126	424091	5087593	Taking pictures of Mkr-33. Right at the marker - viewing bacteria trap 40 and green/copper osmosampler. Took Photos 7 - 10
17	10	1524	231	423856	5087075	Checking out ROPOS gauges - making sure all is ok. Hydraulic fluid down, talk of going back to the cage.
17	12	1503	227	424345	5087694	Slowly going back to cage.
17	16	1492	176	423852	5087102	Taking a plume sample with the HFS - filter #12.
17	18	1482	206	423852	5087102	ROPOS in the cage. Staying here to take some samples of the plume. Plume filter sample for DNA with HFS - starting filter #12.	HFS12_plume _R487-1
17	23	1475	178	424653	5086900	Going to stay here for around 15 minutes to take a few samples. Still pumping HFS filter #12.
17	30	1475	226	424860	5087225	Something in water column - a jellyfish I think.	Photo-13
17	32	1474	116	423852	5087100	Stopped pumping filter #12 - 1502 ml pumped. Starting to pump filter #15 on HFS.	HFS15_plume _R487-2
17	44	1475	256	423869	5087113	Stopped pumping HFS filter #15 - pumped 1050 ml.
17	45	1475	301	423890	5087611	Starting HFS bag sample #17.
17	51	1476	300	425149	5086724	Stopped pumping #17 - 650 ml pumped. Start pumping HFS #19 - bag with filter.	HFS19_plume _R487-4
17	58	1475	207	424342	5087672	Stopped pumping #19 - 675 ml. Note that the flush pump was not on for the first half of the sample. Start to sample HFS bag #16 with no filter.	HFS16_plume _R487-5
18	2	1475	226	423937	5087439	Good nav. x=3846, y=7105 - location of plume fluid sampling.
18	5	1474	212	424117	5087620	Finished pumping #16 - 598 ml pumped. Start pumping HFS filter #3, for sulfur.	HFS3_plume _R487-6
18	9	1477	290	423859	5087130	Fluid volume was not recording for a few minutes - now working again.
18	19	1475	227	424340	5087684	Stopped pumping filter #3 - 130 ml pumped. Going to move the ship to a position over Cloud Vent to sample particulates in plume.
18	27	1476	217	425095	5087131	The Queen says BAD FIXES!
18	28	1476	248	423872	5087114	Moving towards Cloud - still no good fixes.
18	34	1476	205	423874	5087096	We are about half way to Cloud.
18	39	1476	275	423882	5087105	Ship finished moving - waiting for the position to settle.
18	40	1474	257	423900	5087099	Good fix at x=3898, y=7110. Between Mkr-N4 and Mkr-N6.
18	42	1474	202	424440	5086790	x=3900, y=7110 - good fix on ROPOS in cage. We are stopping here to take fluid and gas tight samples. We are flushing the gas line now.
18	44	1476	205	423907	5087096	Right over Mkr-N6.
18	46	1474	352	423900	5087100	The gas line in flushed. Preparing to trigger port gas tight - triggered port GTB at 18:47.	gtb_plume _R487-7
18	48	1475	205	423897	5087098	Going to trigger the gas piston on the HFS, pump position #23. Starting to pump. Good fix x=3901, y=7111.	HFS23_plume _R487-8
18	53	1476	280	423894	5087116	Triggering piston #20.	HFS20_plume _R487-9
19	0	1474	198	423902	5087123	Sample R487-9 finished. 730 ml.
19	3	1476	222	423936	5087610	X = 3908, Y = 7109
19	5	1474	278	423898	5087100	Filter #21 for sulfur analysis started at 19:01.	HFS21_plume _R487-10
19	10	1476	127	424385	5087640	X = 3902, Y = 713. Sample #21 finished. Piston sample #2 started.	HFS22_plume _R487-11
19	17	1476	202	424442	5086790	Sample piston #2 finished. Start bag sample #18 with filter. Still at Cloud Vent.	HFS_plume _R487-12
19	24	1475	267	423902	5087115	Sampler #18 finished. 60 ml.
19	25	1476	331	424385	5086607	Sampler #7 with filter started.	HFS7_plume _R487-13
19	29	1474	136	423907	5087096	#7 finished. 41 ml.
19	29	1475	140	424444	5086797	Sampler #2 with filter started.	HFS2_plume _R487-14
19	33	1476	323	423898	5087098	Sampler #2 finished. Ready to come to surface. Will take samples on the way up.
19	35	1474	285	423904	5087099	Starting integrated bag sampler #1 during rise through the plume because it is "fun" (Butterfield)	HFS11_plume _R487-15
19	44	1254	274	423910	5087482	Stopped sampler at 19:41. Continuing to surface.
20	32					ROPOS on deck.
						Dive summary: Hydraulic failure shortly after ROPOS reached bottom. ROPOS put back into its cage from where it sampled the plumes at about 1475 m depth above Mkr-33 Vent and Cloud Vent. Returned to surface for repairs.