Glossary — vessel-design

3 terms in this category.

• Equipment Number (EN)
  Class-society-calculated dimensionless number that sets the required size + weight of anchors + chains + windlass + mooring equipment.
• IMO number
  The seven-digit unique + permanent identifier assigned to a ship by the IMO — remains with the hull for its entire life regardless of flag + name changes.
• Tonnes Per Centimetre immersion (TPC) (TPC)
  The number of tonnes of weight that must be added or removed to change the ship's mean draft by 1 cm.