Construction Rules-Hull Design

Construction Rules-Hull Design

Construction Rules- Double Hull Design

Sandwich Design: This is the most popular design in which the webs and stiffeners are located in the double hull spaces.

Construction Rules-Double Hull Design

• Minimum Double Bottom/Maximum Double Side: This design has a 2m deep DB and 5m wide DS with an inner bottom longitudinal fitted in the cargo tanks.
• 70% of the ballast is carried in the side tanks, and hence rest of the ballast may be taken in DB tanks at open sea, prevents sediment accumulation in DB tanks.
• Other Designs: Depending on the Double hull width and Double Bottom height, the double hull tanker constructions may be termed as 1/3rd-2/3rd design, Minimum 2m DH design etc.
• Unidirectionally Stiffened Double Bottom: In this design one longitudinal girder and two longitudinal stiffeners are provided instead of inner and outer longitudinals.