Frequently asked questions

Frequently asked questions


Frequently Asked Questions

What is the main principle of operation?

Bawat’s main method of treatment is a one-pass pasteurization technology.

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What is the minimum water flow required for continuous operation?

The Bawat BWMS is customized and designed to fit ship and ballast operations. There is no minimum flow rate requirements for continuous operation of the Bawat BWMS, however, a software introduced limit on 10% of the design flowrate is implemented.


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Is ballast operation by gravity possible?

Yes, the Bawat BWMS is an in-voyage treatment system allowing full gravity based ballast operations e.g. ballast water discharge from top-side hopper tanks.

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What is the operational temperature range?

The Bawat BWMS is independent of water qualities and efficient in all turbidities, salinities and temperatures. 

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Is there a holding time for treated ballast water?

No. The Bawat BWMS one-pass system has no limitations or requirements for after treatment holding time.  


Are there any chemicals used?

The Bawat BWMS does not require addition of ‘active substances’ in any form.  

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Is special coating for the ballast tanks necessary?

No special coating is required for the ballast tanks. 

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Are there any restrictions for ships transporting dangerous goods?

No, there are no restrictions for the Bawat BWMS for ships transporting dangerous goods. 

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Are any additional measures required when operating in fresh or brackish water?

The Bawat BWMS is independent of water qualities and efficient in all turbidities, salinities and temperatures. 

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Is a container solution for deck installation available?

Yes, for deck site placement, the system can be delivered partly or fully skid mounted or in a shipping container size 20’ to 40’ depending on system specifications. 

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Is a non-skidded solution possible?

The Bawat BWMS only consists of standard marine components. 

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What is ballast water?

Cruise ships, large tankers, and bulk cargo carriers use a huge amount of ballast water, which is often taken on in the coastal waters in one region after ships discharge wastewater or unload cargo, and discharged at the next port of call, wherever more cargo is loaded. 

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Definition of ballast water

Ballast water is water carried in ships' ballast tanks to improve stability. 

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What is the cost of a Ballast Water Managagement System (BWMS)?

The cost of a Ballast Water Managagement System (BWMS) varies according to ship type, solution wanted and so forth.

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Is CAPEX and OPEX lower with a Bawat BWMS?

Yes, both OPEX and CAPEX are lower. 

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Is Bawat's BWMS applicable for offshore vessels?

Yes - The Bawat BWMS is delivered in two different versions. 1) As a mobile containerized solution or 2) as a standard BWMS. 

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What is the minimum time required to treat all tanks?

The Bawat system is a one-pass system which means that the ballast water is treated when it has passed through the BWMS

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Bawat Denmark

Agern Allé 5A

2970 Hørsholm, Denmark

Phone: +45 8870 8803


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18 Boon Lay Way Tradehub21

#05-133/134 Singapore 609966

Phone:+ 65 6316 8595



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Aydıntepe mah. Sahil bulvarı

N0.191 Alize iş merkezi kat:1

D:65 Tuzla /İstanbul 34947

Phone: +90 216 494 11 15/16

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XL Shipping House, Voula

16673 Athens, Greece

Phone: +30 6977577120

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3-17-5, Mutsuura-Higashi, Kanazawa, Yokohama

Kanagawa, 236-0037 Japan

Phone: +81(90)3104-1272

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Plot 1D/07A

Near Roundabout 2,

Phase 1, Hamriyah Free Zone, Sharjah - UAE

P.O. Box: 42505

Phone: +971 6 5130333

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Veersedijk 99

3341 LL, Hendrik-Ido-Ambacht, Netherlands

Phone: +3178-6810100



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Hwaseong-si, Gyeonggi-do, Republic of Korea (ZIP 18468)

Phone:+82(0)31 229 1137

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Phone: +47 9760 3595



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Loc. Gabrovizza 58/A

34010 Sgonico Trieste

Phone: +39 040 225732



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12150 SW 128 Court

Suite 120,  Miami, FL 33186

Phone: +1 305 318-3894


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20 Egmont Road Henderson WA 6166

Phone: +61 (0)8 9410 5000


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