Dive R498  
      Dive Plan: Short dive to recover the remaining 3 extensometers with the elevator (elevator prematurely surfaced on Dive R497).  
      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
20 15         ROPOS launched.  
23 29 1579 346 420752 5096803 the cage is at 1570  
23 32 1594 243 420790 5096800 ROPOS on bottom, 1594, have 3-transponder fix, need to head SE to start target  
23 37 1595 254 420773 5096774 looking for first target R498-1
23 40 1593 289 420732 5096844 Extensometer in sight, number 5 on top floatation, 98E4  
23 43 1597 206 420735 5096832 base of extensometer designated 98E4 getting ready to pick it up for transport to elevator. R498-2
23 46 1597 209 420770 5096790 Extensometer is in the starboard arm  
23 53 1596 164 420785 5096800 moving ship position and sub to elevator, taking first extensometer  
23 58 1594 118 420843 5096786 Depth relatively constant en route to elevator, terrain mostly lobate flows.  
0 0 1591 147 420867 5096776 Arrived at the elevator R498-3
0 1 1589 159 420846 5096822 extensometer 98E4 into elevator R498-4
0 2 1590 174 420871 5096759 top of extensometer sinking into tube R498-5
0 3 1593 140 420882 5096770 at elevator  
0 4 1591 197 420878 5096768 Elevator with extensometer R498-6
0 4 1591 222 420884 5096771 range 145 meters at 103 degrees to next target, extensometer 98E2  
0 19 1597 122 420988 5096748 40 meters to the next site.  
0 24 1590 90 420996 5096730 Approaching extensometer e2.  
0 25 1589 119 420996 5096730 Frame grab of extensometer E2. R498-7
0 26 1591 145 423284 5095772 Base of 98E2 before pick up R498-8
0 26 1592 200 423284 5095772 1998 E2 extensometer R498-9
0 27 1593 229 423284 5095772   R498-10
0 27 1593 228 423284 5095772 Might be slightly tilted to the NW (98E2).  
0 27 1593 229 421037 5096733   R498-11
0 28 1593 226 421033 5096735   R498-12
0 29 1592 234 421032 5096734 extensometer 98e2 in the claw and now being carried to the elevator.  
0 36 1581 329 420965 5096793 The elevator is at 80m bearing 254.  
0 41 1590 266 420911 5096783 Good fix, 30 m bearing 254 to elevator.  
0 43 1594 254 420911 5096798 Mkr-35 in sight, where the elevator used to be.  
0 44 1596 265 420916 5096785 Swimming crinoid in video. We are preparing to pick up

Mkr-35.

  
0 48 1595 296 420916 5096783 Mkr-35 in the grasp and we are heading for the elevator

32 meters away.

  
0 51 1588 237 420916 5096782 We have a good ROPOS fix, the elevator is 30 meters away.  
1 1 1593 302 420898 5096759 Rat-tailed fish sighted.  
1 2 1594 273 420879 5096779 Release of the elevator seen. Now the elevator is in view.  
1 7 1590 212 420889 5096760 Mkr-35 dropped into elevator tube.  
1 9 1590 161 420887 5096763 Extensometer 98e2 dropped into elevator tube. Now heading to pick up 98e1.  
1 11 1592 138 420884 5096765 25 m bearing 102 to the next target.  
1 47 1591 201 421205 5096707 Starfish on rock. good nav fix.  
1 50 1592 39 421202 5096709 Nav says we are on top of 98e1b. We don't see it. good fix.  
1 55 1593 175 421202 5096688 good nav fix, crab seen, Holothurian seen, no extensometer seen  
1 58 1593 80 421245 5096629 1998 E1 extensometer R498-14
1 59 1594 97 421223 5096680   R498-15
1 58 1593 85 421206 5096673 extensometer located, 98e1 and is at an angle. It is located in a very rough area.  
2 1 1594 97 421223 5096682 extensometer was inclined toward 023 degrees. We are in the process of grabbing the extensometer.  
2 3 1594 93 421227 5096676 Many barnacles seen on rock, also on extensometer. Note that

the float is al the way to the bottom.

  
2 5 1594 113 421215 5096676 P code lost. Elevator 30 m away.  
2 6 1593 109 421214 5096677 extensometer in grasp and we are heading towards the elevator.  
2 8 1586 80 421182 5096756 Bearing 280 at 30 meters to the elevator.  
2 23 1591 272 420917 5096760 Elevator in sight  
2 24 1592 255 420892 5096760 Back at elevator with last extensometer R498-16
2 24 1592 249 420892 5096760 Chicken in sight R498-17
2 25 1590 82 420883 5096760 extensometer (last) going into tube R498-18
2 31 1569 131 420876 5096769 tether is tangled, trying to get it untangled  
2 35 1588 146 420876 5096774 tether is ok now, back at elevator with extensometer  
2 35 1590 136 424253 5096253   R498-19
2 37 1590 91 421424 5097219 last extensometer not quite in the tube R498-20
2 37 1592 42 420880 5096764   R498-22
2 37 1592 42 420880 5096764 rubber chicken on elevator R498-21
2 37 1592 92 420865 5096770   R498-23
2 38 1593 156 420865 5096770 honey bear on elevator R498-24
2 48 1596 138 420860 5096818 Elevator is not released. Rope pulled off pin. Pin is still in place.  
2 53 1596 152 420863 5096768 pin held in by tie-wrap, trying to pull it out. R498-26
2 56 1596 147 420880 5096764 Now the elevator is released and on the way up.  
3 3 0 0 421030 5096532 ROPOS on way to surface, at 1540 meters, 23/min  
3 59 0 0 420874 5096849 03:49 UTC Elevator on board  
3 59 0 0 420874 5096849 ROPOS on deck at 0414 UTC  
       Dive Summary: Recovered the extensometers that were deployed in '98. Three extensometers were placed in the elevator (one was placed on the previous dive). Elevator has all four '98 extensometers in tow.