• Port of Rotterdam

    Data driven model

    • Connecting available models in the area to the trajectory model of the channel.
    • Automatically import the latest and most accurate forecasts to be used in calculations

    Use cases

    • For each inbound/outbound transit a safety analysis is done on given route for individual ship at expected conditions. This gives transit window for each individual ship.
    • Under keel clearance calculation at each location and time is based on available channel depth, expected water level, draft, speed (through water), squat and expected dynamic vertical motions.
    • Analysis of maximum draft per outgoing transit.
    • Import of AIS-tracks to monitor speed/timing per route.
  • Port of Long Beach


    • Analysis of dynamic underkeel clearance for all tankers at 55ft draft and above.
    • PROTIDE introduction at 65ft maximum draft with extensive evaluation of dynamic UKC based wave forecasts and dynamic response (roll/pitch/heave).
    • After operational introduction of PROTIDE: maximum draft gradually increased to 69ft under constant evaluation.

    Validation of methodology

    • Calculation of ships response to expected and measured wave conditions.
    • Measure actual ship movements on board in combination with and speed, heading and rate of turn.
    • Combine roll, pitch, heave into total vertical motion at extremes of ship to calculate UKC.
    • Compare and visualize models versus measurements.
  • Port of Emden / Eemshaven

    Shared channel

    • The Eems channel shared between two ports.
    • The PROTIDE system is shared between various users, each with their specific roles and authorizations.
    • Dashboard of all transits notifies on intersection of routes.


    • Port accessibility due to new channel and policy changes.
    • Actual measured ship speeds, compared to the model.
    • Measurements of dynamic motions for underkeel clearance validation.

    Cross currents and wind

    • Excluding port accessibility due to cross currents.
    • Modeling additional rolling of container vessels and car carriers due to wind/gusts.
  • Port of San Francisco

    Multiple ports

    • Multiple ports with one pilot organization.
    • Routes inbound, outbound and between ports.

    Channel depth

    • Use sounding data to automatically update channel segment to available depth for transits.
    • Trajectory bounds of 60% channel width or AIS track.
    • Modeling impact of temporary sediment increases on underkeel clearance.

    Squat calculations

    • Tailored to the channel specifics.
    • Using ship dimensions to calculate ship specific values.
    • Taking currents, trim and salinity/tempearture into account.
  • Western Scheldt


    • WESTERSCHELDE PLANNER (WESP): creates itineraries and transit windows for all marginal traffic to/from/between Port of Antwerp & North Sea Port.
    • WESP is constantly updated with planned transits, new hydrometeo data and bathymetric changes.
    • PROTIDE REST-full API with OData implementation.
    • WESP uses PROTIDE as the calculation engine for all keel clearance and cross current calculations. It utilizes the PROTIDE API to update circumstances, perform calculations and retrieve results.

    Use case

    • Every 3 to 6 hours pushes of hydrometeo data.
    • Every 10 minutes all new transits and updated ship positions are sent to PROTIDE: up to 500 – 1000 calculations a day.