In this section
Stability of fishing boats and small vessels
All vessels entering the Westport Harbour must be in stable condition. Stability is determined by the force of buoyancy provided by the underwater parts of a vessel, combined with the weight of its hull, equipment, fuel, stores and load. These forces can be adversely affected by weather conditions and sea state.
- The free surface effect of liquids and loose fish.
- Additional weights on deck, including portable ice slurry bins and fuel containers.
- The loss of stability that occurs if deck enclosures or bins suddenly fill with water.
- Modifications to a vessel may be detrimental to its stability. The vessel’s statical stability should be calculated after any alterations.
- The movement of weights within the vessel including people.
- All bars have areas of broken water containing air, which can severely reduce the stability and handling of a vessel.
- In marginal conditions, nighttime crossings are more hazardous.
- Vessels attempting to cross a bar at or near low water are more likely to experience adverse conditions than at high water.