Vessel Features

The Floating Desalination Production Vessel is a design by Deck Carriers a proven ship design in cooperation with the Water Desalination Technology Group of Lansco.

Vessel Features

  • Load carrying capacity of 10,000 - 20,000 dwt

  • Clear deck area of 2,000 - 3,000 sq meters

  • Storage tank capacity of 40,000 — 50,000 m³

  • High deck strength of 15 - 20 ton/m³

  • Wide beam design of 28 m

  • Double hull structure, for safety and protection

  • Fully enclosed housing protection on deck

  • Crew facilities in 4-storey deckhouse

  • Self-propulsion or non-propulsion

  • Option of being power driven

  • International Classification Society Regulations

  • (ICSR) compliant.

  • Conforming to the emission control and stringent

  • marine regulatory.

Desalination Facility Features

  • Ultrafiltration (UF) on the main deck

  • Reverse osmosis (RO) on the main deck

  • Pumps & valves located under deck

  • PivB aro horizontal along the decks

  • Pipes are vertical between the decks

  • Lower deck tanks - processed treated

  • Compact 3 -dimensional layout

  • Air conditioned monitoring & control rooms

Power Facility Features

  • Electrical power from generators

  • installed on tho vessel

  • IMO Tier II Generators

  • Optional installation of cables coupling from inland grid

Floating Desalination Production Vessel Flow Chart


Seawater is drawn via pipes connected to the sea. The seawater passes through filter screens of 20 mm and 2 mm before being pumped to an array Of auto-strainers of 100m and onwards to the UF pre-treatment system.

Lansco’s Kristal® UF membranes are used in the pretreatment system. Kristal® UF membranes have been tested to effectivity remove microorganisms and bacteria which can foul the downstream RO system. The result is a permeate of consistently high quality that will boost the performance and lifespan of the RO membranes.


There are two RO passes for the treatment of permeate from the UF treatment process. The first RO pass uses seawater reverse osmosis (SWRO) technology. Approximately 40-45% of the pretreated seawater is recovered from the first RO pass for treatment in the second RO pass. The latest energy recovery technology is adopted to recover the residual energy. The second RO pass using low pressure reverse osmosis (LPRO) process further treats the water to meet the boron specification. About 90% of the water from the first RO pass is recovered after the second RO pass.

Reverse Osmosis


After the RO. the RO and the backwash reject stream is discharged back into the sea.


The water is then stored in the product water tank before use, alternatively it can be stored in pillow bladders & collapsible flexi tanks for emergencies.

Post - Treatment

The water after the two-pass RO treatment is very pure and is re-mineralised by dosing with lime and carbon dioxide to adjust the pH level. Chlorine. fluoride and ammonium sulphate are added tor fluoridation and chloramination.