Table 3 | Table of Contents

Table 2. Leg 198 - Shatsky Rise

Alternate Operations Plan and Time Estimate

    Water           Total
Site Location Depth Operations Description   Transit Drilling Logging On-site
  (Lat/Long) (mbrf) (mbsf) (hr) (days) (days) (days) (days)
                 
Yokohama 35.5° N, 139.7° E Transit 1116 nmi f/Yokohama to SHAT-5C @ 10.5 kt 106.25 4.4      
                 
SHAT-5C 37°47.729'N 3123 Hole A: APC to refusal (~200 m), XCB to ~555 mbsf 110.00   4.6    
  162°45.053'E   Hole B: APC to ~200 mbsf, XCB/MDCB to ~555 mbsf 160.25   6.7    
      Note: Core 155 m with MDCB (4.5 m cores)          
      Wireline log: triple combo/FMS-sonic/GHMT 28.00     1.2 12.5
                 
      Transit 166 nmi from SHAT-5C to SHAT-11 @ 10.5 kt 15.75 0.7      
                 
SHAT-11 36°27.601'N 4818 Hole A: APC to refusal (~180 mbsf) 40.00   1.6    
(alternate) 160°16.955'E   Hole B: APC to ~180 mbsf 37.25   1.6   3.2
                 
      Transit 95 nmi from SHAT-11 to SHAT-4 @ 10.5 kt 9.00 0.4      
                 
SHAT-4 36°7.629'N 3318 Hole A: APC to refusal (~200 mbsf) 35.00   1.5    
  158°12.094'E   Hole B: APC to ~200 mbsf 32.25   1.3   2.8
                 
      Transit 66 nmi from SHAT-4 to SHAT-7 @ 10.5 kt 6.25 0.3      
                 
SHAT-7 37°9.900'N 4143 Hole A: APC to refusal (~175 mbsf) 37.25   1.6    
(alternate) 158°40.529'E   Hole B: APC to ~175 mbsf 34.50   1.4   3.0
                 
      Transit 271 nmi from SHAT-7 to SHAT-1 @ 10.5 kt 25.75 1.1      
                 
SHAT-1 32°39.099'N 2418 Hole A: APC to refusal (~200 mbsf), XCB to 300 mbsf 44.50   1.9    
(modified) 158°30.357'E   Hole B: APC to ~200 mbsf, XCB to 300 mbsf 47.25   2.0    
      Wireline log: triple combo/FMS-sonic/GHMT 26.50     1.1 5.0
                 
      Transit 32 nmi from SHAT-1 to SHAT-2B @ 10.5 kt 3.00 0.1      
                 
SHAT-2B 32°6.865'N 2782 Hole A: APC to refusal (~200 mbsf), XCB to ~240 mbsf 39.00   1.7    
(modified) 158°3.030'E   Hole B: APC to ~200 mbsf, XCB to ~240 mbsf 41.75   1.7    
      Wireline log: triple combo/FMS-sonic/GHMT 26.50   1.1   4.5
                 
      Transit 52 nmi from SHAT-2B to SHAT-3 @ 10.5 kt 5.00 0.2      
                 
SHAT-3 31°34.641'N 3881 Hole A: APC to refusal (~70 mbsf) 20.25   0.8    
(modified) 157°17.862'E   Hole B: APC to ~70 mbsf, NDT inspect BHA 21.50   0.9   1.7
                 
      Transit 9 nmi from SHAT-3 to SHAT-14 @ 10.5 kt 1.00 0.1      
                 
SHAT-14 31°25.51'N 4340 Hole A: RCB to 100 mbsf (50 m into basement) 37.0   1.5    
(alternate) 157°15.43'E   Lay out BHA/DC/secure for transit to port         1.5
                 
Honolulu 21°30'N, 158°W Transit 2485 nmi f/SHAT-14 to Honolulu @ 10.5 kt 236.50 9.9      
                 
                 
      SUBTOTAL:   17.2 31.9 2.3 34.2
      TOTAL OPERATING DAYS (w/ 5 day port call):   56.4

Table 3 | Table of Contents