Times for Clearance Under Woronora Road Bridge Second Span from the East for the Year 2000 ___________________________________________________________________________________________ | Tide | Tides| Height of Vessel | | Height| Year | 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 | |_________________________________________________________________________________________| | 1.99 | 1 | 38 2:08 2:59 3:40 4:16 4:49 5:20 5:50 6:19 6:49 | | 1.95 | 5 | 1:41 2:38 3:22 3:59 4:32 5:04 5:34 6:03 6:32 | | 1.90 | 14 | 55 2:17 3:07 3:48 4:25 4:58 5:30 6:01 6:32 | | 1.85 | 22 | 1:41 2:39 3:22 4:00 4:33 5:05 5:35 6:05 | | 1.80 | 37 | 55 2:15 3:05 3:46 4:22 4:56 5:28 5:59 | | 1.75 | 47 | 2:01 3:11 4:05 4:51 5:34 6:16 6:56 | | 1.70 | 73 | 1:01 2:31 3:27 4:14 4:56 5:35 6:12 | | 1.65 | 113 | 2:00 3:09 4:02 4:48 5:31 6:12 | | 1.60 | 163 | 1:06 2:43 3:45 4:36 5:23 6:08 | | 1.55 | 219 | 1:53 2:59 3:49 4:33 5:13 | | 1.50 | 272 | 58 2:25 3:19 4:04 4:45 | | 1.45 | 331 | 2:09 3:25 4:23 5:14 | | 1.40 | 400 | 1:03 2:37 3:37 4:27 | | 1.35 | 470 | 2:39 4:16 5:34 | | 1.30 | 528 | 1:02 2:34 3:32 | | 1.25 | 575 | 2:02 3:14 | | 1.20 | 626 | 1:11 2:58 | | 1.15 | 663 | 2:19 | | 1.10 | 684 | 1:19 | |=========================================================================================| | Days | 1 13 24 55 85 103 126 119 92 48 | | Tides | 1 14 38 94 185 292 423 544 640 691 | | Time | 38 21:27 74:10 187:47 437:04 815:39 1342:13 1993:55 2683:46 3376:39| | Percent | 0.0 0.2 0.8 2.1 5.0 9.3 15.3 22.8 30.6 38.5 | |_________________________________________________________________________________________| Explanatory Notes 1. The table charts the delay in getting under the bridge for various heights of boats against predicted tide heights. 2. These are worst case times, assuming arrival on a rising tide, waiting for it to peak and then fall. The times are either minutes, or hour:minutes. 3. The bottom part of the table shows the cumulative impact for a full calendar year. There is no significant variation in times for other years. 4. Large tides occur in early January and June. 5. The Tides/Year column indicates the number of tides equal to or greater than the height. eg There are 5 tides that are 1.95m or higher. 6. As an example, a vessel 1.9m high, could potentially be delayed by a high tide 55 days a year (usually twice each day). The longest delay would be 3 hours and 40 minutes, but that only occurs once a year. In any calendar year, there is a total of 188 hours when it is not possible to get under the bridge, which is 2.1 percent of all the hours in a year.