Vessel supply starts with the right fluid
Azure supplies marine-grade 40% aqueous urea, commonly called AUS 40, for marine selective catalytic reduction (SCR) applications that specify this concentration. Our team works with vessel operators and purchasing teams to discuss quantities, packaging, and the receiving arrangements for each order.
The photographs on this site show Azure’s tanker alongside a vessel at the port. That practical supply context matters: a marine order involves the right product, a suitable delivery format, and coordination with the vessel’s schedule and location.
IBC totes or bulk tanker supply
- IBC totes: a contained supply format for operations with appropriate lifting, storage, transfer, and onboard handling arrangements.
- Bulk tanker: discuss delivery to your vessel’s receiving setup, including the required volume, access, connection, and transfer arrangements.
Choosing between totes and bulk depends on your required quantity and how the vessel will receive and store the fluid. Share the receiving requirements with us before ordering. We will confirm availability and the proposed supply arrangement with your team.
Tell us about your vessel and port call
A useful marine inquiry includes the vessel name, port and berth or receiving location, required volume, and requested delivery date or time window. Include any relevant receiving contact, access requirements, and transfer details so we can discuss the order in context.
Our manufacturing base is in Santa Ana, California. Contact Azure to confirm supply for your requested port and schedule. If product documentation is needed for the vessel or your purchasing process, include that request when asking for pricing.
Marine urea questions
Is marine 40% urea the same as regular truck DEF?
No. Marine AUS 40 contains 40% urea; standard DEF, or AUS 32, has a 32.5% concentration. They are different products. Use the concentration and quality requirements specified for the engine’s SCR system.
Should I request totes or bulk tanker supply?
Consider the volume, available storage, lifting equipment, and fluid transfer setup. Tell us how your vessel receives and handles urea so we can discuss the appropriate format.
Can I arrange a delivery for a specific port call?
Send the port, vessel, volume, and delivery window with your inquiry. Our team will confirm whether the requested arrangement is available; delivery timing is established when the order is planned.
Discuss marine 40% urea supply or email admin@azuredef.com. For road fleets, see 32.5% diesel exhaust fluid and bulk DEF supply.
A clear product name for your marine urea inquiry
AUS 40 is sometimes called “marine DEF” in the industry. Azure identifies this product as Marine 40% Urea. Write “AUS 40 — 40% aqueous urea solution” on your supply inquiry so it is distinguished from 32.5% road-vehicle DEF.
State the quantity and its unit together: U.S. gallons, litres, or metric tonnes. For totes, include the total fluid quantity you need as well as any container-count preference. Include the local time zone with your vessel's requested receiving window, particularly when coordinating purchasing and port teams in different locations.