Dive R484  
        Objectives: 1) Deploy other osmosampler from elevator at northern end of Mkr-33. 2) Collect basalt sample at Mkr-33. 3) Suction sample bacterial mats at Mkr-33 for Moyer, gastropods and mat for Levesque.  
       Suction sample bacterial mats at Cloud for Moyer, vent fauna larvae for Tunnicliffe. Suction sample for diatom mat on new lavas for Tunnicliffe. 4)Tube worm grab at Cloud. 5)Short Imagenex survey at Mkr-33 and vicinity.  
      6) Recover Time Lapse Camera . 7) Recover elevator with OsmoSamplers and microbial traps.  
      ROPOS Configuration: 7 function arm, 5 function arm, Biobox, Suction samplers (7 jars), Gas tights (2), Imagenex and other cameras.  
        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
10 21 0 0 0 0 On the way down, the navigation people are trying to find a bug in the nav program and so the heading, depth, X, and Y will not be updated until we are near the bottom.  
  10 27 0 0 0 0 ROPOS went in the water at 10:15.  
  11 36 1490 253 423846 5087083 ROPOS leaving the cage.  
  11 37 1522 267 423847 5087092 ROPOS is on the bottom  
  11 43 1523 272 423843 5087086 Frame grabber locked up.  
  11 44 1522 14 424199 5086776 Navigation still not good.  
  12 18 1523 270 423858 5087087 Logging off since 11:55. Begin ss1 at 11:55, target is mat material. Video bad. Nav bad. Sampling stopped to flush at 12:11. 12:16 repositioning sub and trying to fix clog in the line. x=423860 y=5087105 SS_mat_R484-1
12 23 1523 256 423869 5087103 still flushing slurp system into bottle 4.  
  12 27 1520 181 423860 5087093 ROPOS moving to attempt to capture a crab.  
  12 29 1522 165 423471 5086545 Target crab. R484-1
12 29 1524 174 423860 5087091 Target crab. R484-2
12 31 1522 156 423630 5086828 Into the box. R484-4
12 33 1523 123 423865 5087089 Final solution. R484-5
12 34 1524 126 423899 5086698 Crab collected. Bio_R484-2
12 35 1524 121 424126 5087648 Crab escaped. Sample lost.  
  12 39 1524 84 423868 5087093 Second attempt to collect same crab.  
  12 40 1524 74 423871 5087114 Crab escaped for the second time.  
  12 42 1524 61 423865 5087100 Crab capture completed. Crab in port bio-box.  
  12 43 1523 359 423864 5087088 ROPOS returning to cage.  
  12 51 1520 2 423595 5086465 Retrieving a bacterial trap from the elevator.  
  12 52 1522 114 423861 5087095 Bacterial trap was #42. Moving to deploy it.  
  12 56 1523 304 423857 5087097 #42 deployed. R484-7
12 56 1522 308 423858 5087097 Bacterial trap 42 deployed at the end of the crack at Mkr-33.  
  13 0 1519 78 423860 5087082 Collecting another bacterial trap #41 from the elevator.  
  13 4 1522 171 423858 5087086 Deploy #41 at the same site as #42.  
  13 9 1520 155 423860 5087098 Collecting bacterial trap #40 from the elevator.  
  13 11 1523 267 423856 5087103 Location of bacterial trap #40. R484-8
13 12 1521 14 423853 5087097 Bacterial trap #40 deployed near OsmoSampler, middle of the crack.  
  13 17 1519 160 423865 5087100 Opening Moyer bio-box inside elevator.  
  13 19 1520 23 423859 5087083 Collected bacterial trap #43 from elevator.  
  13 21 1523 280 423856 5087097 Position of bacterial trap 43. R484-9
13 22 1523 243 423856 5087097 Bacterial trap #43 deployed.  
  13 23 1523 245 423860 5087103 Attempting to clear the clogged suction sampler.  
  13 28 1520 88 423855 5087092 Back at the elevator collecting 4 bacterial traps.  
  13 36 1520 310 423861 5087081 Moving bactrp 36 from the elevator to the strb sub bio-box.  
  13 38 1520 268 423862 5087091 Transferring bactrp #39 to sub strb bio-box.  
  13 40 1520 203 423860 5087095 Transferring bactrp #38 to sub strb bio-box.  
  13 40 1519 194 423857 5087099 Begin changing VCR tapes.  
  13 42 1519 193 423862 5087094 Finish changing VCR tapes.  
  13 43 1520 282 423860 5087093 Transferring bactrp #37 to sub strb bio-box.  
  13 45 1517 24 423937 5086713 Moving to Cloud vent.  
  13 45 1522 71 423937 5086713 Nav fixes bad.  
  13 51 1517 54 423899 5087123 Nav fixes good.  
  13 52 1520 125 424740 5086697 Still looking for Cloud vent. Fixes not good. Found area with worms and warm water.  
  13 55 1523 137 423901 5087114 Nav fixes good.  
  13 56 1523 137 423909 5087120 Worms and warm water just north of Cloud Vent. Fixes bad. R484-10
13 58 1523 134 423901 5087114 Fixes are good. Cloud 5 meters away.  
  14 2 1525 92 423644 5086924 Looking for Mkr-N4, trying to find bactrps.  
  14 4 1519 92 424532 5088000 Collapsed area. Fixes are bad.  
  14 5 1520 99 423924 5087108 Good Fix.  
  14 5 1523 267 423914 5087115 Tube worms. Good fix. R484-11
14 6 1522 275 423904 5087108 Cloud vent Mkr-N4.  
  14 6 1524 282 423901 5087116 Mkr-N4. Cloud vent. Tube worms and scale worms. R48412
14 8 1523 274 423901 5087115 Deploy bactrp # 37 at Cloud  
  14 10 1524 281 424429 5087476 Deploy bactrp #36 at Cloud vent Mkr-N4. x=423896 y=5087119  
  14 14 1524 272 423901 5087111 Recover bactrp #14 into strb bio-box bactrp_R484-3
14 21 1524 260 423625 5086916 Remove bactrp #39 from box and deploy next to Mkr-N4.  
  14 25 1524 262 423893 5087118 Attempting to recover an MTR sample. MTR_R484-4
14 28 1524 244 423899 5087114 Finish MTR recovery. Into strb bio-box.  
  14 30 1524 252 423898 5087116 Recovering bactrp (can't read number) into strb bio-box. bactrp_R484-5
14 36 1524 253 423897 5087102 Deploying bactrp #38 at Mkr-N4.  
  14 39 1523 267 424434 5087448 Moving around to survey for worms.  
  14 42 1524 262 423970 5086736 Working to clear suction sampler.  
  14 45 1524 262 424049 5087913 Mkr- N4 positions of bactraps. R484-13
14 47 1522 307 423997 5087171 Moving around to look for worms.  
  14 48 1522 257 424403 5087529 Nav fixes bad.  
  14 49 1522 200 423891 5087118 Nav fix good.  
  14 53 1486 237 423965 5087100 ROPOS back to cage.  
  14 55 1490 87 424082 5087584 ROPOS going back to bottom.  
  14 58 1524 102 423844 5087084 Good fix. First good one in awhile. Heading SW to start of Imagenex line.  
  15 1 1518 204 424438 5087440 Stopped, trying to get a fix, bad fixes right now.  
  15 2 1518 203 423838 5087002 Good fix, 40 m south of beginning of 1st imagenex transect, moving to start point  
  15 55 1479 281 423932 5087100 Still maneuvering for start of line. Problem with bow thruster. Imagenex survey aborted. Weather not good enough to recover elevator. Will pick up time-lapse camera and come to surface.  
  16 34 1384 284 423875 5087107 Decided not to reattempt imagenex survey; heading to bottom to get time-lapse camera  
  16 44 1523 228 424360 5087689 At elevator, about to recover the time-lapse camera (TLC)  
  16 46 1523 153 423854 5087090 Quickly flying back over Mkr-33 to make sure osmosampler intakes are correctly positioned  
  16 55 1524 16 423856 5087073 Nav has been bad for around 10 minutes  
  16 56 1524 337 423852 5087087 Good fix  
  17 4 1524 235 424449 5087467 While checking out the osmosamplers, the bacteria traps #42 and # ? got dislodged, so we are now repositioning them. The ship is drifting to the NE, trying to reposition ship.  
  17 9 1514 253 424426 5087486 ROPOS going back to cage. Waiting for ship to reposition.  
  17 12 1465 114 424376 5087657 Back at cage. Waiting.  
  17 18 1453 206 423926 5087108 Ship repositioned. Going to get Time Lapse Camera.  
  17 24 1515 285 424482 5087421 Waiting for a good fix.  
  17 24 1517 285 423890 5087082 Good fix.  
  17 25 1520 315 424491 5087438 At Mkr-23. Going to get TLC at base of elevator.  
  17 26 1523 283 423964 5087122 Disregard previous comment - NOT at Mkr-33, but came down at Mkr-N8.  
  17 27 1520 308 424711 5086887 At the elevator. SEE TLC!  
  17 30 1525 307 423810 5086523 Picking up the Time Lapse Camera - bad fix.  
  17 35 1525 291 423846 5087093 FG of grabbing the Time Lapse Camera. R484-14
17 39 1525 283 424442 5087475 The Queen says NAV SUCKS!  
  17 40 1526 283 424441 5087473 Trying to jettison the 65 lbs from ROPOS in order to pick up camera.  
  17 42 1526 282 423849 5087346 Weight released!  
  17 48 1526 284 425147 5086738 Picking up TLC. x=423850 y=5087101 R484-15
17 48 1526 283 424443 5087473 TLC being positioned in claws to come up.  
  17 51 1526 283 424445 5087476 TLC ready to come up - positioned in claws properly. The jettison weight is still attached to ROPOS on port side.  
  17 57 1525 309 424889 5087523 WE just lost sub power.  
  17 58 1525 309 424889 5087523 Sub power on then off again.  
  18 0 1525 307 424889 5087523 Power and lights back on - video up. Sitting on the bottom with TLC in claws. Discussing what to do.  
  18 1 1525 305 424889 5087523 Power off, back up again.  
  18 4 1524 291 424889 5087523 Flying backward trying to dislodge jettison weight.  
  18 6 1514 241 423892 5087061 Lost lights again. Coming up to try to dislodge weights.  
  18 7 1505 230 423887 5087047 Weights gone. Coming up to the surface.  
  18 13 1445 241 423914 5087082 Time lapse camera recovery should have the sample number R484-6. TLC_dfl_R484-6
20 15 108 155 424102 5086984 Puled ROPOS into the cage with the tether winch in first attempt. Great driving by Keith Shepherd. Bringing cage up fast.  
  20 27 1 172 424230 5087291 ROPOS on deck at 1323h.  
  20 47 1 160 424230 5087291 Time lapse camera appears to be OK. Crab is dead. Stainless steel bolt in a bactrap was almost eaten through.

END OF DIVE R484

  
      Summary of Dive R484: For about the first half hour of the dive the log entry program was shut down. During the collection of the first suction sample it was rebooted.  
      Mkr-33: SS of mat; one nearly whole crab captured, TLC recovered, deployed bactraps. Cloud: Two bactraps and one MTR recovered, deployed bactraps, short worm survey.  
      Suction sampler clogged on first sample. Color balance on frame grabs was poor. The sub lost hydraulic fluid which forced the end of