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Table T1. Operations plan and time estimate for primary sites, ODP Leg 209.

Site Location (lat/long) Water depth (mbrf) Operations description (hrs) Total transit (days) Total coring (days) Total logging (days) Total on-site (days)
 
  22.53°S, 43.17°W   Begin leg in Rio de Janeiro, Brazil        
 
      Transit ~2246 nmi from Rio de Janeiro to MAR-4S @ 10.5 kt      
 
MAR-4S 14.8488°N 3011 Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores)      
  45.0822°W   (wireline logging with triple combo and FMS-sonic)     0.6 6.2
 
      Transit ~5 nmi from MAR-4S to MAR-3S @ 10.5 kt 2.0 0.1      
 
MAR-3S 14.9324°N 2861 Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores)      
  45.0713°W   (wireline logging with triple combo and FMS-sonic)     0.6 5.5
 
      Transit ~53 nmi from MAR-3S to MAR-1S @ 10.5 kt 5.0 0.2      
 
MAR-1S 15.1090°N 2911 Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores)      
  44.9590°W   (wireline logging with triple combo and FMS-sonic)     0.6 5.5
 
      Transit ~105 nmi from MAR-1S to MAR-1N @ 10.5 kt 10.0 0.4      
 
MAR-1N 15.6478°N 3981 Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores)      
  46.6759°W   (wireline logging with triple combo and FMS-sonic) 15.0     0.6 6.0
 
      Transit ~6 nmi from MAR-1N to MAR-2N @ 10.5 kt 2.0 0.1      
 
MAR-2N 15.5480°N 3911 Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) 127.0   5.3    
  46.6870°W   (wireline logging with triple combo and FMS-sonic) 15.0     0.6 5.9
 
      Transit ~3 nmi from MAR-2N to MAR-3N @ 10.5 kt 2.0 0.1      
 
MAR-3N 15.5000°N 3451 Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) 123.0   5.1    
  46.6810°W   (wireline logging with triple combo and FMS-sonic) 14.0     0.6 5.7
 
      Transit ~104 nmi from MAR-3N to MAR-2S @ 10.5 kt 10.0 0.4      
 
MAR-2S 15.0390°N 3611 Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) 132.0   5.5    
  44.9530°W   (wireline logging with triple combo and FMS-sonic) 15.0     0.6 6.1
 
      Transit ~1482 nmi from MAR-2S to Bermuda @ 10.5 kt 142.0 5.9      
 
  32.18°N, 64.48°W   End leg in Hamilton, Bermuda          
 
    SUBTOTAL: 16.1 36.8 4.2 41.0
TOTAL OPERATING HOURS/DAYS (incl. 5.0 day port call): 1490.0 62.1
 
Note 1: multiple spud attempts may be required at each site in order to advance a single RCB hole to minimum of 100 mbsf.
Note 2: penetration depths beyond 100 mbsf are desired and will be pursued if hole conditions allow.
Note 3: wireline logging may be problematic at all or some of the drilling locations. As a result, RAB-C logging-while-coring (LWC) will likely be substituted for conventional RCB coring and/or wireline logging at selected sites.
Note 4: desired coring approach is to cut/recover RCB half cores using non-magnetic core barrels with chrome plated ID.

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