Dive log
| No | Date | Activity | Zones | Duration (minutes) | Participants | Notes |
|---|---|---|---|---|---|---|
| 1 | 2024-05-05 | 71 | Christian Rémillard | |||
| 2 | 2024-05-18 | 111 | Christian Rémillard | |||
| 3 | 2024-05-25 | 120 | Christian Rémillard | |||
| 4 | 2024-06-02 | test | 2 | 19 | Christian Rémillard | Dive with a tripod on the floor of zone 3 to measure the diameter of the light cone from a Chinese lamp placed 70 cm above the bottom. The goal was to find the cone’s angle so I could adjust where the lamps sit in the camera’s field of view and get lighting as even as possible. |
| 5 | 2024-06-08 | 99 | Christian Rémillard | |||
| 6 | 2024-06-11 | test | 80 | Christian Rémillard, Thierry Amar |
Dive at the Bédard quarry in Kahnawake to get footage of the vinyl checkerboard for the camera calibration test. | |
| 7 | 2024-06-14 | test | 2 | 125 | Christian Rémillard | Comparison between a part of the wooden floor swept clear of its sediment layer and a part left unswept. |
| 8 | 2024-06-21 | survey | 1 | 117 | Christian Rémillard | First scan with the wooden floor brushed beforehand. |
| 9 | 2024-06-21 | survey | 1, 7 | 103 | Christian Rémillard | |
| 10 | 2024-06-24 | survey | 1, 7 | 103 | Christian Rémillard | Scan to complete the 2 others for zone 1 (floors and edges) and 7 (bottom of the wall and of the stair-shaped structure to the east). |
| 11 | 2024-06-28 | survey | 2 | 114 | Christian Rémillard, Véronique Lisi, Michel Giroux |
Scan of the zone 2 pillar. Meanwhile, Véro and Michel prepared the surface of the wooden floor for the scan. |
| 12 | 2024-06-28 | survey | 2 | 91 | Christian Rémillard | Scan of the zone 2 floor. |
| 13 | 2024-06-29 | survey | 10 | 97 | Christian Rémillard, Jean-Sébastien Fournier |
Scan of zone 10. Jean-Sébastien helped prepare the wooden surfaces. |
| 14 | 2024-07-01 | survey | 11 | 121 | Christian Rémillard | Scan of zone 11. 22’ scale bar |
| 15 | 2024-07-01 | survey | 16 | 71 | Christian Rémillard | Scan of zone 16: this data isn’t used, it was replaced by the data collected on dive no. 35 (2024-08-09) |
| 16 | 2024-07-05 | survey | 3 | 182 | Christian Rémillard | Partial scan of zone 3: west half of the floor, west wall and bottom of the pillar (-55’ to -41’) |
| 17 | 2024-07-07 | survey | 2, 3 | 134 | Christian Rémillard | Scan of parts of zone 3: from -13m up to the top of the pillar, the horizontal surface backing onto the west wall, and the arched concrete wall along the walkway. Scan of the arched concrete wall along the zone 2 walkway. |
| 18 | 2024-07-07 | survey | 3 | 112 | Christian Rémillard | Scan of the floor and of the west side from the floor, with targets 1 and 2 (35 feet), up to the height of the horizontal surface at about -44 feet. |
| 19 | 2024-07-12 | survey | 2 | 121 | Christian Rémillard | Scan of the west wall, of the arched structure including its top and its west-facing side next to the walkway, the vertical grooves, and the horizontal faces of the “steps”, the east edge. |
| 20 | 2024-07-12 | survey | 3, 12 | 128 | Christian Rémillard | Scan of the 3 guard gate passages and their openings on the west side (zone 12), including the stretch of wall between them and the ground. |
| 21 | 2024-07-14 | survey | 2, 3, 12 | 142 | Christian Rémillard | Zone 2 scan: 32’ scale bar; zone 3: end of the floor that hadn’t been scanned before; zone 12: top of the east wall, from the wooden palisade up to the top, including part of the [south]? pillar |
| 22 | 2024-07-14 | survey | 12 | 122 | Christian Rémillard | Scan of the floor, including targets 1 and 2 of a scale bar whose length I forgot to write down!, and of part of the north pillar from the bottom up to mid-height. |
| 23 | 2024-07-20 | survey | 10, 11 | 92 | Christian Rémillard | Zone 10: 20’ scale bar at the foot of the zone, top of the palisade and of the south pillar, vault. Zone 11: |
| 24 | 2024-07-20 | survey | 8 | 86 | Christian Rémillard | Scan of the wall face, excluding the stairs to the west and the top of the wall |
| 25 | 2024-07-21 | survey | 8 | 151 | Christian Rémillard | Scan of the stairs at the west end of the zone |
| 26 | 2024-07-21 | survey, test | 8, 15, canal | 110 | Christian Rémillard | Zone 8 scan: horizontal part above the wall; zone 15: test scan without brushing first, on part of a spillway gate; canal: test scan of the floor in a single drift, without any brushing first |
| 271 | 2024-07-26 | survey, test | 8, canal | 152 | Christian Rémillard | Zone 8: measurements: height of the pipe standing vertically: 12’ 3¼”, width of step no 10 (counting from the bottom step): 5’, length of the wall from the west staircase to the east wall of zone 10: 77’ 11¼”. Scan of the targets of a 73’ scale bar on top of the wall. Canal: test scan of a flat surface 300’ long (3 passes, camera facing forward) done on top of the canal’s south wall. |
| 28 | 2024-07-26 | survey | 7 | 104 | Christian Rémillard | Zone 7: scan of the staircase at the east end of the zone. |
| 29 | 2024-07-28 | survey | 5 | 91 | Christian Rémillard, Jean-Sébastien Fournier, Josianne Demers |
Brushing the surfaces: pillar, wooden palisade, arches, including the mechanisms attached to them and the metal railing. |
| 30 | 2024-07-28 | survey | 5 | 71 | Christian Rémillard | Zone 5 scan in horizontal strips, top to bottom: the top of the zone, the arches, the pillar and the wooden palisade, stopping at -45 feet, that is just below the horizontal ledge under the wooden palisade. |
| 31 | 2024-07-28 | survey | 5 | 65 | Christian Rémillard | Continued the zone 5 scan from -45 feet down to the floor; the floor itself wasn’t scanned on this dive. |
| 32 | 2024-08-02 | survey, test | 5, 18, 19 | 228 | Christian Rémillard | Test of 3 kinds of push pins on the pillar of zones 19 and 18: all 3 kinds fixed on one face in zone 19; the green metal model placed on 2 corners of a horizontal beam on the east face of pillar 18. The green metal model is the one that works well. It’s also easy to spot in the images. The white marker I used doesn’t stand up well to rubbing. I’ll use the white/grey permanent Sharpie marker. Zone 5: floor scan + 31’ scale bar. |
| 33 | 2024-08-04 | survey, test | 18 | 181 | Christian Rémillard, Jean-Sébastien Fournier, Josianne Demers, Dan Foster |
Zone 18 scan; Test measuring the zone 18 pillar as a reference cube for lens calibration. 49’ scale bar taken between this zone’s pillar and the one to the east (zone 19) |
| 34 | 2024-08-09 | survey, test | 18 | 175 | Christian Rémillard | Scan of the west face of the zone 18 pillar. Placed 16 7.5cm targets on each corner of the pillar’s 4 side faces; scanned the targets in a single take; scan of 2 connections: (1) between the pillar and the zone 19 one (to the east): 49’, (2) north/south strip from the north-east corner of the zone 18 pillar to a stump at -32’. |
| 35 | 2024-08-09 | survey | 12, 16 | 104 | Christian Rémillard | Zone 12 scan: north face of the north pillar, north face of the south pillar, the upper segment south of the palisade where the small boat is stuck. Full zone 16 scan with connections (1) west toward zone 6 and (2) south toward the canal wall |
| 36 | 2024-08-11 | test, preparation | 18, 7 | 127 | Christian Rémillard, Jean-Sébastien Fournier, Josianne Demers |
Measured 23 scale bars (out of 24) from the 16 7.5cm targets placed on each of the 4 faces of the zone 18 pillar. Swept the top of the zone 7 wall |
| 37 | 2024-08-11 | survey | 7 | 105 | Christian Rémillard | Zone 7: 93’ scale bar measured on top of the zone’s wall; scan of the top and part of the wall, working from the top down. Too much current, I couldn’t hold a steady depth. Stopped the scan at about -40’, level with some square openings in the wall. |
| 38 | 2024-08-16 | test, preparation | 18, 4 | 133 | Christian Rémillard | Zone 18: test measuring the zone 18 pillar as a reference cube for lens calibration. Follow-up to the test from dive no 33 (2024-08-04), this time with the camera horizontal to measure sideways. Zone 4: sweeping the sediment. |
| 39 | 2024-08-16 | preparation | 4 | 167 | Christian Rémillard | Zone 4: sweeping the sediment. |
| 40 | 2024-08-18 | survey, preparation | 4, 13 | 100 | Christian Rémillard, Jean-Sébastien Fournier, Josianne Demers |
Zone 4: scan from the top down to -52’. The camera’s exposure setting was accidentally left at -1.5 stop. Zone 13: cleaning. |
| 41 | 2024-08-18 | survey, preparation | 4, 13 | 101 | Christian Rémillard, Jean-Sébastien Fournier, Josianne Demers |
Zone 4: scan of the floor, the gate openings, the palisade and the bottom, working up to -48’. Scale bar on the floor: 33’. Zone 13: cleaning. |
| 42 | 2024-08-23 | preparation | 13 | 47 | Nicolas Pinsonneault | Cleaning zone 13 |
| 43 | 2024-08-23 | preparation | 13 | 46 | Nicolas Pinsonneault | Cleaning zone 13 |
| 44 | 2024-09-01 | survey, preparation | 13 | 155 | Christian Rémillard | Picked up the 16 targets left on the zone 18 pillar Cleaning and partial scan of zone 13: floor scan, including targets 1 and 2 (15cm) of a 24’ scale bar between the zone’s 2 pillars; walls from the floor up to a height of -14.3 metres (-47 feet). |
| 45 | 2024-09-02 | preparation | 13 | 49 | Nicolas Pinsonneault | Cleaning zone 13 |
| 46 | 2024-09-06 | preparation | 13 | 47 | Nicolas Pinsonneault, Julie Cardinal |
Cleaning zone 13 |
| 47 | 2024-09-06 | preparation | 14 | 44 | Nicolas Pinsonneault, Julie Cardinal |
Cleaning zone 14 |
| 3 d 13 h 14 min |
Footnotes
Section titled “Footnotes”-
On July 26, 2024, I changed the data collection setup. The subject <-> camera distance went from 50cm to 70cm, and the side overlap from 80% to 75% (20cm to 30cm). This was to cut down the time spent filming. ↩