Operations Plan–Option 3 | Table of Contents

Leg 197 Operations Plan and Time Estimate
Option 2
Site	Location	Water	Operations Description	Transit	Drilling	Logging	Total
No.	Lat/Long	Depth		(days)	(days)	(days)	On-site
		(mbrf)
Yokohama	35°16.80'N		Transit 1552 nmi from Yokohama, Japan, to Site HE-3B @ 11.0 kt	5.9
	139° 23.40' E
HE-3B	50° 48.60' N	2740	Drill ahead through sediment with a center bit to 450 mbsf		7.6	1.3	8.9
	167° 33.00' E		RCB from 450 to 620 mbsf (170 m into basement) using
			FFF for one bit change
			Wireline logs (Triple combo, Mag Tool, and FMS)
			Transit 11 nmi from Site HE-3B to Site HE-3A @ 11.0 kt	0.0
HE-3A	50° 57.00' N	2773	Drill ahead through sediment with a center bit to 500 mbsf		7.5	0.9	8.4
	167° 44.40' E		RCB from 500 to 670 mbsf (170 m into basement) using FFF
			for one bit change
			Wireline logs (Triple combo and FMS)
			Transit 580 nmi from Site HE-3A to Site HE-4B @ 10.5 kt	2.3
HE-4B	41° 29.00' N	1300	RCB to 220 mbsf (180 m into basement)		5.4	0.6	6.0
	170° 38.00' E		Wireline logs (Triple combo and FMS)
			Transit 200 nmi from Site HE-4B to Site HE-5C @ 10.5 kt	0.8
HE-5C	38° 09.50' N	1480	RCB to 240 mbsf (180 m into basement)		5.6	0.6	6.2
	170° 50.00' E		Wireline logs (Triple combo and FMS)
			Transit 201 nmi from Site HE-5C to Site HE-6A @ 10.5 kt	0.8
HE-6A	34° 58.94' N	1331	RCB to 260 mbsf (180 m into basement)		5.4	0.6	6.0
	172° 08.98' E		Wireline logs (Triple combo and FMS)
Yokohama	35° 16.80' N		Transit 1640 nmi from Site HE-6A to Yokohama, Japan @ 10.0 kt	6.8
	139° 23.40' E
			TOTAL:	16.5	31.5	4.0	35.5
				TOTAL DAYS:		52.0

Operations Plan–Option 3 | Table of Contents