Dive 541

UTC

Z(m)

Hdg

UTM X

UTM Y

Comments - Dive R541 (South Cleft Area)

Samples

Investigator

SubSmps

FrGrb#

Automated Logging System not giving accurate information!! All auto time, heading, depth and utm position information inaccurate! CORRECT TIME AND POSITION ENTRIES ARE FOUND IN COMMENTS COLUMN. Positions in utm x/y columns are automated and not flagged for accuracy. Consult dive maps for final position data. !!BAD ACOUSTIC NAV THIS DIVE!!

No samples this dive.

Tasks: Deploy Cleft Extensometers 2-7 at benchmarks 2-7.

Bottom time: JD183(7/1) 1245-JD184(7/2) 0150

In the water, off the deck at 11:04 ish. The time, heading, and depth are not working properly right now.

1201 - Seascape died at 12:01.

12:17:06 Jul 01 '00

1493

72

392403

4946612

Depth, time, and heading are now correct.

12:19:26 Jul 01 '00

1543

97

392400

4946610

We are at 1550m, so far so good.

12:34:48 Jul 01 '00

1854

66

392382

4946591

Seascape is back up and fine.

12:36:48 Jul 01 '00

1893

82

392391

4946591

Time is 5 minutes slow and depth is 70 meters low.

12:41:08 Jul 01 '00

1978

66

392379

4946585

Bill is momentarily taking Seascape down.

12:41:08 Jul 01 '00

1978

66

392379

4946585

1250 - Seascape is back up at 1250.

12:41:48 Jul 01 '00

1989

71

392383

4946592

Julia is logging off seascape real quick.

12:41:48 Jul 01 '00

1989

71

392383

4946592

Leaving the cage at 2170m.

12:41:48 Jul 01 '00

1989

71

392383

4946592

Heading down to the bottom, out of cage. Cage is 40 m off the bottom.

12:41:48 Jul 01 '00

1992

69

392383

4946592

Back up on seascape and starting logging.

12:42:28 Jul 01 '00

2004

76

392377

4946590

1255 - Time is actually 12:55, depth 2200 m.

12:43:18 Jul 01 '00

2020

56

391814

4945708

Bottom in sight- 2210 m.

12:44:28 Jul 01 '00

2044

66

391884

4945978

Getting range to elevator so we can find the extensometers.

12:54:38 Jul 01 '00

2202

115

392303

4946542

Elevator is about 100 m away. Heading east.

12:55:28 Jul 01 '00

2210

105

392326

4946504

Good fix for ROPOS x392371 y=4946579

12:55:58 Jul 01 '00

2213

102

392321

4946504

Heading northeast.

12:56:48 Jul 01 '00

2213

101

392295

4946540

Range between elevator and us got a bit bigger.

12:58:48 Jul 01 '00

2213

177

391923

4944988

Moving ship 50 m NE

13:04:08 Jul 01 '00

2212

51

392360

4946577

1314 - Still waiting for ship to move to find the elevator. Coming up in the water column to see if we can see the elevator in the sonar.

13:06:58 Jul 01 '00

2212

55

392477

4946650

Moving ship 75 m due west.

13:07:48 Jul 01 '00

2212

55

392490

4946628

1319 - Seems like we might be getting closer to the elevator now. Moving northwest.

13:09:20 Jul 01 '00

2214

55

392468

4946585

Range is definitely decreasing- we're heading in the right direction.

13:09:40 Jul 01 '00

2212

55

392461

4946555

x=392440 y=496643 approximate cage fix. x=392353 y=496643 approximate elevator drop.

13:12:10 Jul 01 '00

2213

351

392352

4946590

Range is starting to go back up again.

13:13:50 Jul 01 '00

2205

352

392438

4946664

Moving ship 50 m southwest.

13:15:00 Jul 01 '00

2206

184

392636

4948237

1328 - Consistently getting 80 m range.

13:21:20 Jul 01 '00

2213

265

392467

4946678

After moving 50m south-west ship further away from elevator-- now moving ship 50m south-east

13:24:40 Jul 01 '00

2213

270

392474

4946683

Now moving ship north-east, elevator minimum range from cage

13:28:30 Jul 01 '00

2213

273

392470

4946703

Moving ship another 50m north-east

13:35:32 Jul 01 '00

2212

94

392386

4946600

1354 - Distance is decreasing to elevator, approximately 100m away, still moving to the northeast.

13:42:02 Jul 01 '00

2212

2

392342

4946547

Still moving northeast, distance still decreasing to elevator, approximately 100m. Note that previous distance was a gross estimate.

13:44:02 Jul 01 '00

2212

2

392334

4946557

Holding ship's position

13:47:22 Jul 01 '00

2212

341

392622

4948243

Moving ship another 50m northeast.

13:50:52 Jul 01 '00

2214

326

392408

4946668

1413 - LOP (line of position) northwest, distance has begun increasing. Moving ship due west.

13:56:12 Jul 01 '00

2213

37

391968

4946264

Closing fast on the elevator, ROPOS is northwest of the cage and has begun heading due west.

13:59:22 Jul 01 '00

2212

38

392405

4946686

Moving ship north, distance to elevator from cage is approximately 60m.

14:02:22 Jul 01 '00

2213

38

391910

4946198

50m to elevator, holding ships position

14:03:54 Jul 01 '00

2213

43

392505

4946746

1429 - Elevator is in ROPOS visual range.

14:05:44 Jul 01 '00

2212

43

392441

4946702

Three of the six extensometers are missing. One of three remaining is almost out of elevator.

14:07:24 Jul 01 '00

2212

44

392445

4946718

Extensometer #5, #2, and #4 are the remaining ones.

14:12:14 Jul 01 '00

2213

340

392914

4946877

Performing search for other extensometers.

14:13:14 Jul 01 '00

2213

316

391659

4949273

ROPOS is currently due south of cage and heading due north for first transect.

14:18:54 Jul 01 '00

2210

319

392521

4946807

Added a target called ELEV X=392407.3 Y=4946787.7 depth is 2215m. Have gone 60m north of elevator, found nothing.

14:25:34 Jul 01 '00

2209

3

390700

4949237

ROPOS picked up the first extensometer and heading to Bench Mark 4, 250 meters south of the elevator

14:28:54 Jul 01 '00

2212

278

392407

4946788

ship is moving to Benchmark 4

14:34:56 Jul 01 '00

2214

232

392462

4946817

1509 - x=392481 y=4946784 z=2210m

14:40:16 Jul 01 '00

2203

314

392478

4946831

reset the deck set to a cycle of 15 sec

14:43:06 Jul 01 '00

2209

1

392476

4946844

1520 - x=392481 y=4946654 depth is 2210

14:48:36 Jul 01 '00

2209

2

391769

4946270

ship is stopping

14:52:06 Jul 01 '00

2206

165

391810

4946242

1532 - x=392452 y=4946544 z=2211. All fixes have been two transponder fixes, so they are questionable.

14:53:36 Jul 01 '00

2207

283

392410

4946769

time is now 40 minutes behind

14:59:18 Jul 01 '00

2212

177

392406

4946792

There it is! (Benchmark 4)

15:01:28 Jul 01 '00

2210

191

392392

4946765

1545 - our position offset 400 meters SW.

15:04:18 Jul 01 '00

2210

185

392484

4946837

successfully placed extensometer 4 onto Bmrk-4

15:05:08 Jul 01 '00

2210

182

392484

4946837

x=392396 y=4946526 is the actual position for Bmrk-4

15:57:53 Jul 01 '00

2215

114

392409

4946555

positioned arm outside hole in extensometer; talking to extensometer

15:57:53 Jul 01 '00

2215

114

392409

4946555

Tried using transducer in the well instead of the cage for a relay, but not getting any fixes from ROPOS. ROPOS can't hear the transducer in the well

15:57:53 Jul 01 '00

2215

114

392409

4946555

not getting any acoustic nav

15:57:53 Jul 01 '00

2215

114

392409

4946555

ship moving to the elevator position, time 16:18

15:57:53 Jul 01 '00

2215

114

392409

4946555

about 50 meters from the elevator start position

15:57:53 Jul 01 '00

2215

114

392409

4946555

positioned arm outside hole in extensometer; talking to extensometer

15:57:53 Jul 01 '00

2215

114

392409

4946555

Tried using transducer in the well instead of the cage for a relay, but not getting any fixes from ROPOS. ROPOS can't hear the transducer in the well

15:57:53 Jul 01 '00

2215

114

392409

4946555

not getting any acoustic nav

15:57:53 Jul 01 '00

2215

114

392409

4946555

1618 - ship moving to the elevator position.

15:57:53 Jul 01 '00

2215

114

392409

4946555

about 50 meters from the elevator start position

16:27:25 Jul 01 '00

2211

356

392409

4946555

1629 - x=392409 y=4946632 believable fix depth=2210

16:30:25 Jul 01 '00

2211

360

392412

4946656

time caught up because of reboot, but will continue to drift

16:35:55 Jul 01 '00

2210

355

391941

4946268

Found 2 extensometers! stopped the ship

16:37:11 Jul 01 '00

2211

359

392346

4946679

moving the ship 50 meters south

16:38:11 Jul 01 '00

2210

3

392347

4946686

1641 - x=392352 y=4946705 time, depth=2212

16:46:57 Jul 01 '00

2214

266

391170

4946052

picked up extensometer #7 (in the right arm) and #3 (in the left arm)

16:54:41 Jul 01 '00

2207

39

392362

4946698

ROPOS headed back to the elevator

16:58:27 Jul 01 '00

2212

22

394346

4946056

moving ship to the elevator position

16:59:13 Jul 01 '00

2211

15

394346

4946056

1702 - ROPOS fix x=392404 y=4946729, depth 2210.

17:00:43 Jul 01 '00

2211

7

392406

4946727

1708 - put down both extensometers; picked up Exten-3 in right arm.

17:00:43 Jul 01 '00

2211

7

392406

4946727

ROPOS is 5 meters to the SW of the elevator

17:12:13 Jul 01 '00

2215

80

392412

4946736

moving the ship south-southeast to Bmrk-3

17:19:13 Jul 01 '00

2211

165

393961

4946621

lava pit - between elevator and Bmrk-3

R541-001

17:20:59 Jul 01 '00

2213

167

394376

4946030

fish

R541-002

17:32:31 Jul 01 '00

2212

162

392493

4946678

no ROPOS nav since we left elevator

17:34:01 Jul 01 '00

2213

164

392493

4946678

What is it?

R541-003

17:35:01 Jul 01 '00

2213

165

392493

4946678

1742 - ROPOS fix x=392483 y=4946533; depth=2213.

17:36:45 Jul 01 '00

2214

166

392052

4946263

at Bmrk-3 position, looking for it

17:46:59 Jul 01 '00

2213

188

392458

4946480

Bmrk-3 sighted!

17:48:29 Jul 01 '00

2213

211

392506

4946494

Bmrk-3 sighted

R541-004

17:49:29 Jul 01 '00

2216

193

392506

4946494

putting exten in Bmrk-3

R541-005

17:49:59 Jul 01 '00

2215

193

392475

4946513

almost in!

R541-006

17:49:59 Jul 01 '00

2215

193

392475

4946513

contd.

R541-007

17:50:45 Jul 01 '00

2215

193

392506

4946494

fini!

R541-008

17:53:29 Jul 01 '00

2215

188

393166

4944404

doing a pressure check

17:54:15 Jul 01 '00

2215

188

392142

4946130

1757 - actual position of Bmrk-3. x=392507 y=4946495

18:02:31 Jul 01 '00

2215

26

392526

4946517

pressure sensor at Bmrk-3

R541-009

18:12:01 Jul 01 '00

2215

21

394147

4945881

R541-010

18:12:01 Jul 01 '00

2215

21

394147

4945881

R541-011

18:12:17 Jul 01 '00

2215

21

394147

4945881

R541-012

18:12:47 Jul 01 '00

2215

21

394147

4945881

R541-013

18:13:01 Jul 01 '00

2215

21

394147

4945881

R541-014

18:13:31 Jul 01 '00

2216

21

394147

4945881

R541-015

18:22:17 Jul 01 '00

2215

21

392531

4946523

1827 - end of the pressure measurement.

18:28:47 Jul 01 '00

2213

354

392506

4946494

putting pressure sensor back

R541-0016

18:31:33 Jul 01 '00

2215

308

392521

4946515

R541-0017

18:32:03 Jul 01 '00

2215

308

392507

4946494

1839 - x=392495 y=4946502 decent ROPOS fix.

18:38:49 Jul 01 '00

2215

215

392495

4946502

Extensometer at Bmrk-3

R541-0018

18:39:03 Jul 01 '00

2216

205

392495

4946502

Bmrk-3

R541-0019

18:40:03 Jul 01 '00

2215

185

392495

4946502

extensometer in Bmrk-3

R541-0020

18:45:49 Jul 01 '00

2216

197

393117

4944397

beautiful pit near Bmrk-3

R541-0021

18:47:49 Jul 01 '00

2216

199

394144

4945885

asking ship to move 100m NW

19:00:21 Jul 01 '00

2211

318

392469

4946534

ROPOS good fix 392435 4946537

19:01:35 Jul 01 '00

2206

314

392474

4946515

asking ship to move to Drop, then to Found then to Elevator

19:05:37 Jul 01 '00

2211

305

392441

4946625

Appears to be a 4 min 20 sec offset in the Auto logged time. Auto logged is slow. Auto logged heading is off by a few degrees as well.

19:09:51 Jul 01 '00

2211

310

392344

4946548

Asking ship to move due north now, toward the elevator. Still looking for last extensometer.

19:14:37 Jul 01 '00

2211

324

392434

4946636

good fix on cage 392375 4946620

19:19:23 Jul 01 '00

2211

359

392389

4946621

Found last extensometer (number 6). Stopping the ship.

19:19:53 Jul 01 '00

2210

353

392389

4946621

Exten-6

R541-0022

19:20:37 Jul 01 '00

2209

358

392389

4946621

good cage fix 392374 4946694

19:22:53 Jul 01 '00

2212

355

392389

4946621

Exten-6 in the arms of ropos

R541-0023

19:23:07 Jul 01 '00

2211

2

392389

4946621

grabbed extensometer #6. heading to Bnrk-6

19:31:53 Jul 01 '00

2213

341

392392

4946802

Increasing ship speed to 3/4 knot.

19:40:55 Jul 01 '00

2214

221

392352

4946758

Auto logged time offset is now about 11 min. ROPOS is transiting to Bmrk-6.

20:00:57 Jul 01 '00

2216

239

392209

4946590

basalted pillow lava flows ... collapsed

R541-0024

20:01:43 Jul 01 '00

2212

1

390851

4946124

ROPOS is using the 5 function to remove line from inside the Bmrk-6 target hole.

20:01:43 Jul 01 '00

2214

1

390851

4946124

removing the cord on bmk six

20:03:57 Jul 01 '00

2207

96

392230

4946621

ROPOS is repositioning its grip on the extensometer.

20:07:57 Jul 01 '00

2210

29

392234

4946577

found Bmrk-6

20:08:11 Jul 01 '00

2209

54

392234

4946577

benchmark six is located

20:13:57 Jul 01 '00

2215

47

392164

4946575

underwater baseball ... on benchmark #6

20:16:27 Jul 01 '00

2216

48

392158

4946566

ROPOS is setting the extensometer down on the bottom in order to remove the wood/line inside BM6.

20:19:43 Jul 01 '00

2215

47

392511

4948305

the sixth extensometer is placed (the benchmark was not a good fit)

20:19:57 Jul 01 '00

2216

48

392317

4946690

ROPOS is using the 7-function arm to grab the wood block that is under Bmrk-6. Lifting the line that wood is attached to. Rotten 2x4 just crumbled and the line was easily removed. ROPOS is now picking up the extensometer.

20:26:59 Jul 01 '00

2216

37

392305

4946678

2034 - Positioning the extensometer in the BM. Extensometer is now deployed in the Benchmark.

20:27:43 Jul 01 '00

2216

37

392206

4946587

placing extensometer 6 in benchmark 6

R541-0029

20:28:13 Jul 01 '00

2216

37

392200

4946544

the marriage of Exten-6 and Bmrk-6

R541-0030

20:28:13 Jul 01 '00

2216

37

392204

4946587

2034 - backing up to check the angle of inclination of the extensometer.

20:28:29 Jul 01 '00

2216

37

392204

4946587

20:34 - outside Bmrk-6

R541-0031

Where is FrGrb 32???

20:28:43 Jul 01 '00

2216

36

392204

4946587

Bmrk-6

R541-0033

20:28:59 Jul 01 '00

2215

37

392204

4946587

pulling away from Bmrk-6

R541-0034

20:29:13 Jul 01 '00

2215

36

392204

4946587

the last of Bmrk-6

R541-0035

20:30:29 Jul 01 '00

2216

36

392204

4946587

2037 - Bmrk-6

R541-036

20:30:29 Jul 01 '00

2216

37

392204

4946587

2037 - tapes are being changed.

20:30:59 Jul 01 '00

2216

51

392204

4946587

the last of Bmrk-6 / Exten-6

R541-037

20:30:59 Jul 01 '00

2216

51

392204

4946587

ROPOS is positioning in order to return to the elevator. Asking the ship to move to the elevator at 1 knot.

20:34:15 Jul 01 '00

2216

33

392204

4946586

the cage

R541-038

20:35:15 Jul 01 '00

2212

45

392204

4946586

cage closer up ...

R541-039

20:40:29 Jul 01 '00

2201

4

392215

4946614

2049 - good cage fix 392248 4946639. archive tapes (VHS and beta) change is completed

20:54:31 Jul 01 '00

2173

51

392332

4946723

2055 - still transiting to the elevator.

21:09:13 Jul 01 '00

2175

281

392397

4946791

Auto logged time is reasonably good. It seems to be with in a 1/2 min of the correct time. ROPOS is searching for the elevator.

21:11:43 Jul 01 '00

2210

337

392511

4948338

good fix on cage392397 4946790

21:13:13 Jul 01 '00

2209

307

392363

4946789

ROPOS has elevator in sight.

21:20:13 Jul 01 '00

2211

350

392447

4946801

ROPOS is positioning to remove extensometer #2 from the elevator. 2123 - grabbing Exten-2.

21:22:59 Jul 01 '00

2211

82

392405

4946790

Ropos is placing Exten-2 on the bottom. It ended up somewhat upright. ROPOS is positioning to remove Exten-5 from the elevator.

21:28:45 Jul 01 '00

2212

300

392426

4946748

ROPOS is grabbing Exten-5 at 2132, going for the mast, removing it from the elevator. 2134 positioning Exten-5 on the bottom in order to get a new grip.

21:35:29 Jul 01 '00

2213

58

392416

4946747

ROPOS is picking up Exten-5 for transit to Bmrk-5.

21:39:01 Jul 01 '00

2212

53

392448

4946804

Asking ship to move to Bmrk-5 at 1 knot.

21:39:45 Jul 01 '00

2212

27

392448

4946798

the cage...

R541-0040

21:42:45 Jul 01 '00

2181

301

392438

4946804

gauges

R541-0041

21:53:01 Jul 01 '00

2179

221

392392

4946723

Looking for Benchmark 5.

22:06:03 Jul 01 '00

2214

138

392395

4946647

Located Bmrk-5. ROPOS is positioning to remove the line from the benchmark. Small sea star under the Bmrk-5.

22:06:17 Jul 01 '00

2214

117

392312

4946571

Bmrk-5

R541-0042

22:07:03 Jul 01 '00

2214

280

392401

4946645

approaching Bmrk-5

R541-0043

22:09:03 Jul 01 '00

2216

176

392309

4946559

ROPOS is using the 5 function to remove the line. Benchmark was moved about 2 cm during the attempt at removing the wood.

22:09:47 Jul 01 '00

2215

170

392309

4946559

prepping to remove the cord/2x4 ballast from Bmrk-5

R541-0044

22:10:19 Jul 01 '00

2215

152

392309

4946559

cord is pulled to break through the waterlogged 2x4 on bmrk-5

R541-0045

22:11:19 Jul 01 '00

2216

155

392309

4946559

Exten-5 about to be placed.

R541-0046

22:11:19 Jul 01 '00

2216

155

392309

4946559

2214 - extensometer 5 positioned in Bmrk-5. 2218 ROPOS is attempting to nudge the extensometer to ensure that it's positioned correctly (centered) in the benchmark. The extensometer settled into positioned.

22:12:19 Jul 01 '00

2216

158

392327

4946585

Exten-5 in place

R541-0047

22:13:03 Jul 01 '00

2216

156

392343

4946587

2216 - Exten-5 in place

R541-0048

22:15:49 Jul 01 '00

2216

127

392302

4946523

Exten-5 fully in place (previous settlement efforts were askance)

R541-0049

22:20:03 Jul 01 '00

2216

113

392280

4946546

Asking the ship to move back to the elevator.

22:22:19 Jul 01 '00

2180

335

392303

4946533

cage w/ cable

R541-0050

22:26:19 Jul 01 '00

2181

82

392302

4946566

ROPOS is transiting to the elevator.

22:32:05 Jul 01 '00

2192

64

392362

4946673

archive tapes are changed. ROPOS still looking for the elevator.

22:46:21 Jul 01 '00

2212

203

392426

4946826

Exten-2 & ?

R541-0051

22:47:07 Jul 01 '00

2211

240

392425

4946817

coordinates of elevator target have moved x=392428.2, y=946790.8 back to pick up Exten-2

22:48:07 Jul 01 '00

2207

221

392425

4946817

picking up Exten-2

R541-0052

22:48:37 Jul 01 '00

2210

51

392425

4946817

Exten-2 grabbeth

R541-0053

23:02:37 Jul 01 '00

2177

141

392435

4946730

time check off ROPOS 'sit cam' screen 23:13:00

23:23:09 Jul 01 '00

2211

135

392520

4946504

23:27 (23:23 data log time) sighting of sea cliff dive weight

23:31:55 Jul 01 '00

2213

79

392575

4946470

crinoid - underwater nerd

R541-0054

23:37:25 Jul 01 '00

2214

203

392190

4943199

rattail fish

R541-0055

23:45:41 Jul 01 '00

2216

65

389377

4947720

Bmrk- 2 in sight

23:45:57 Jul 01 '00

2216

159

389377

4947720

found Bmrk-2

R541-0056

23:47:11 Jul 01 '00

2214

224

389377

4947720

benchmark 2

R541-0057

23:50:27 Jul 01 '00

2216

14

392141

4946005

ROPOS is positioning extensometer #2 to place it in Bmrk-2.

23:54:57 Jul 01 '00

2216

287

392486

4944653

benchmark 2

R541-0058

23:55:13 Jul 01 '00

2217

283

392486

4944653

Extensometer is centered in the benchmark.

23:56:57 Jul 01 '00

2217

309

392486

4944653

Hydraulic fluid is leaking. ROPOS will return to the cage.

23:58:13 Jul 01 '00

2217

295

392467

4946383

Exten-2 in place

R541-059

00:32:25 Jul 02 '00

2192

1

392529

4946692

Exten-7 about to be abducted (the last of a series of 6)

00:33:25 Jul 02 '00

2197

68

392529

4946692

funky rocks ... lobate flows

R541-060

00:35:09 Jul 02 '00

2207

63

392529

4946692

Exten-7 being grabbeth .. (of 6)

R541-061

00:36:55 Jul 02 '00

2208

81

392426

4946776

en route to Bmrk-7

01:01:50 Jul 02 '00

2177

123

391864

4946240

edge of cleft bathtub rings (collapsed tube)

R541-062

01:10:06 Jul 02 '00

2178

179

392243

4946681

benchmark 7 in sight

01:13:36 Jul 02 '00

2203

279

392163

4946640

#7 in transit to bmrk

R541-063

01:14:06 Jul 02 '00

2209

275

392163

4946640

#7 in transit to bmrk (closer)

R541-064

01:16:06 Jul 02 '00

2208

65

392472

4948308

#7 closer to placement

R541-065

01:17:06 Jul 02 '00

2206

65

392467

4948309

about to deposit #7

R541-066

01:19:52 Jul 02 '00

2214

71

392103

4946600

Placing #7 ... soon!

R541-067

01:22:06 Jul 02 '00

2212

204

390265

4946400

Exten-7 nearly in place maybe a rock obstructing the full penetration of the plug. Time to burn rubber.

R541-068

01:26:06 Jul 02 '00

2215

312

392152

4946545

Exten-7 a tad askance ..

R541-069

01:28:22 Jul 02 '00

2211

305

392405

4948397

Heading back to the cage.

01:31:52 Jul 02 '00

2213

304

392092

4946607

cage motor is off

01:36:08 Jul 02 '00

2214

315

392092

4946607

cage is in view

01:38:38 Jul 02 '00

2214

300

392092

4946607

Ropos is in the cage.

01:40:08 Jul 02 '00

2214

302

392092

4946607

heading up to the surface

01:44:38 Jul 02 '00

2214

321

392096

4946608

tapes off

0306 - sub on deck.

0309 - elevator at surface.

R541 Dive Summary: Deployed Extensometers 2-7 (Clft E2-E7) at Benchmarks 2-7. Pressure measurement at Bmrk-3. No samples.