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New Service

2014.06.11
Voyage Planning Service Technical Report Vol.2

Implementation of High Resolution Tidal Current Forecast Model

In order to enhance our service quality, Weathernews has introduced a high resolution tidal current forecast in the Malacca Strait, Lombok Strait, and Vitiaz Strait. This enables improvements of ship speed simulation, ETA estimation, RPM recommendation, and weather analysis due to more realistic estimation of sea conditions.

Upgraded Items

- High resolution tidal current forecast is applied over the following three (3) designated areas: Malacca Strait, Lombok Strait, and Vitiaz Strait.

High resolution tidal current forecast model

1) Upgrade characteristics

- Areas where the tidal current forecast is applied the Malacca Strait, Lombok Strait, and Vitiaz Strait, as well as the previously released English Channel and Gibraltar Strait.
- Tidal current forecast is based on a high-resolution model. Spacial and temporal resolutions are as follows for the newly added areas:
  Malacca Strait: 0.008 degrees, 3 hour intervals, for 6 days
  Lombok Strait/Vitiaz Strait: 0.04 degrees, 3 hour intervals, for 6 days


Areas where the new high resolution tidal current forecast is applied


2) Effects of Upgrade

The upgrade enables a more detailed estimation of sea conditions. The new simulation including tidal current forecast can more accurately estimate ship speed and ETA calculation compared with the ocean current data only.

Comparison between ocean current and ocean + tidal current in the Malacca Strait


Example of ship speed comparison using ocean current and including tidal current

*Calculated from 78E to Singapore

Example of ETA comparison using ocean current and including tidal current

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