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Sonavision Mercury Sonar Images Survey of three 9.15m x 7.32m (30' x 24') jetty caissons in zero visibility |
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1 of 4 during descent showing advance of fill between caissons |
2 of 4 during descent showing advance of fill between caissons | 3 of 4 during descent showing advance of fill between caissons | 4 of 4 during descent showing advance of fill between caissons (distortion is a result of the ROV being in motion during scan) |
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| 1 of 2 showing two oblique faces; mid-water | 2 of 2 showing two oblique faces; mid-water |
1 of 3 investigating level of fill adjacent to caissons
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2 of 3 investigating level of fill adjacent to caissons |
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3 of 3 investigating level of fill adjacent to caissons
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detail of fender attachment rails taken mid-water
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plan view of jetty with three caissons
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aerial photo of jetty |
| Concrete Pier | Test Tank | ||
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| corner of concrete pier; 20 m range | detail
of steps on concrete pier; 5 m range |
corner of tank during initial test at 4 meter range | full surround of tank at 3 meter range |