Table T1. Operations and time estimates for Expedition 353 primary sites.
| Site | Location | Seafloor depth (mbrf) |
Operations description | Transit (days) | Drilling coring (days) |
LWD/MWD log (days) |
|
|---|---|---|---|---|---|---|---|
| Singapore | Begin expedition | 5.0 | Port call days | ||||
| Transit ~16 nmi to W1 @ 6.0 kt | 0.1 | ||||||
| Transit ~2 nmi to W2 @ 6.0 kt | 0.0 | ||||||
| Transit ~9 nmi to W3 @ 6.0 kt | 0.1 | ||||||
| Transit ~151 nmi to W4 @ 10.5 kt | 0.6 | ||||||
| Transit ~705 nmi to AA-4 @ 10.5 kt | 2.8 | ||||||
| AA-4B | 10°38.03′N | 1102 | Hole A - APC/XCB core to 422 mbsf | 0 | 2.8 | 0.0 | |
| EPSP to 422 mbsf | 93°0.00′E | Hole B - APC/XCB core to 422 mbsf | 0 | 1.9 | 0.0 | ||
| Hole C - APC/XCB core to 422 mbsf | 0 | 2.2 | 0.0 | ||||
| Subtotal days on site: | 6.8 | ||||||
| Transit ~9 nmi to AA-2B @ 10.5 kt | 0.0 | ||||||
| AA-2B | 10°47.41′N | 1380 | Hole A - APC/XCB core to 738 mbsf | 0 | 4.7 | 0 | |
| EPSP to 738 mbsf | 93°0.00′E | Hole B - APC/XCB core to 738 mbsf; wireline log-triple combo/FMS-sonic | 0 | 4.6 | 1 | ||
| Subtotal days on site: | 10.3 | ||||||
| Transit ~652 nmi to BB-7 @ 10.5 kt | 2.5 | ||||||
| BB-7 | 19°5.01′N | 1436 | Hole A - APC/XCB core to 184 mbsf | 0 | 1.4 | 0 | |
| EPSP to 184 mbsf | 85°44.09′E | Hole B - APC/XCB core to 184 mbsf | 0 | 0.8 | 0 | ||
| Hole C - APC/XCB core to 184 mbsf | 0 | 0.9 | 0 | ||||
| Subtotal days on site: | 3.1 | ||||||
| Transit ~97 nmi to BB-5 @ 10.5 kt | 0.4 | ||||||
| BB-5 | 17°44.72′N | 2506 | Hole A - APC/XCB core to 680 mbsf | 0 | 5.2 | 0 | |
| EPSP to 680 mbsf | 84°47.25′E | Hole B - APC/XCB core to 680 mbsf; wireline log-triple combo/FMS-sonic | 0 | 5.1 | 1.0 | ||
| Subtotal days on site: | 11.4 | ||||||
| Transit ~89 nmi to BB-2B @ 10.5 kt | 0.4 | ||||||
| BB-2B | 18°59.82′N | 1189 | Hole A - APC/XCB core to 184 mbsf | 0 | 1.1 | 0 | |
| EPSP to 184 mbsf | 85°37.29′E | Hole B - APC/XCB core to 184 mbsf | 0 | 0.7 | 0 | ||
| Hole C - APC/XCB core to 184 mbsf | 0 | 0.9 | 0 | ||||
| Subtotal days on site: | 2.6 | ||||||
| Transit ~862 nmi to N90E-2C @ 10.5 kt | 3.5 | ||||||
| N90E-2C | 5°23.0041′N | 2974 | Hole A - APC/XCB core to 350 mbsf | 0 | 2.6 | 0 | |
| Pending EPSP approval | 90°21.7099′E | Hole B - APC/XCB core to 350 mbsf | 0 | 2.1 | 0 | ||
| Hole C - APC/XCB core to 350 mbsf; wireline log-triple combo/FMS-sonic | 0 | 2.5 | 0.8 | ||||
| Subtotal days on site: | 8 | ||||||
| Transit ~317 nmi to W6 @ 10.5 kt | 1.3 | ||||||
| Transit ~459 nmi to W7 @ 10.5 kt | 1.9 | ||||||
| Transit ~149 nmi to W8 @ 10.5 kt | 0.6 | ||||||
| Transit ~10 nmi to W9 @ 10.5 kt | 0.0 | ||||||
| Transit ~3 nmi to W10 @ 10.5 kt | 0.0 | ||||||
| Transit ~16 nmi to Singapore @ 10.5 kt | 0.1 | ||||||
| Singapore | End expedition | 14.1 | 39.3 | 2.9 | |||
| Port call: | 5.0 | Total operating days: | 56.3 | ||||
| Subtotal on site: | 42.1 | Total expedition: | 61.3 | ||||
LWD = logging while drilling, MWD = measurement while drilling. EPSP = Environmental Protection and Safety Panel. APC = advanced piston corer, XCB = extended core barrel, FMS = Formation MicroScanner.
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