The Different Hazard Levels Through Ship API

AIS Tracking

Assigning hazard levels to pressure vessels, is a way to warn about the potential hazard created. Those levels are determined by the AS 43434:2014 standards state, and these ratings act as essential warnings.

We will find out in this article what are the different hazard levels of vessels and how they are classified?



  • What is the hazard of pressure vessels?
  • How do you determine if a vessel is a pressure vessel?
  • Types of pressures vessels:
  • How can I get data about hazard levels through API?

What is the hazard of pressure vessels?


The Hazard of pressure vessels is warning information about the vessels that the fluid-charged enclosures and that there’s a specific vessel approach. Those hazards are classified through different levels Starting from Level A to Level E.

Hazard Level A is the most dangerous, and Hazard Level E is the least dangerous pressure containment condition.

What is the hazard of pressure vessels

What are the different Hazard Level Classifications?

As we mentioned earlier, Hazard Level A is the most dangerous, Hazard Level B the second most dangerous, and so on, until we reach Hazard Level F. Using the criteria covered in the aforementioned AS standards chapter, those letters are preassigned. That’s something every engineer and technician should know, even if they don’t have access to a copy of the guidelines and categories.

There are different Hazard Level Classification:

  • Hazard level A(High level) – which applies to Large pressure vessels (e.g. 4000-tonne ethane vessels, 7000-tonne butane or propane vessels, 25 000 tonne ammonia vessels, 200-tonne chlorine vessels, and large power boilers) 
  • Hazard level B(medium hazard) – Shop manufactured vessels and boilers
  • Hazard levels C and D – Low and small pressures equipment 
  • Hazard level E – The hazard is negligible


How do you determine if a vessel is a pressure vessel?


Usually, there are some common characteristics of pressure vessels:

  • Shape. the most common shapes for pressure vessels are cones, spheres, and cylinders. 
  • Design.  The mass of a pressure vessel should scale along with the volume it contains and the pressures it will be put under. This mass is inversely proportional to the strength and weight ratio of the vessel’s construction material, and from that, the minimum mass required goes down as strength goes up.
  • Construction materials. Since the vessel needs to be incredibly strong. Usually, the most common material used is steel. Also, sometimes is from filament wound composite or concrete.
  • Pressure. Most pressure vessels are designed to operate at 15 psig* or more.


Types of pressures vessels:

Here are some of the most common types of pressure vessels:

  • Storage tanks/vessels
  • Boilers
  • Heat exchangers
  • Process vessels


How can I get data about hazard levels through API?


It become accessible nowadays to extract all the data about the ship’s specifications. 


In datalastic, we provide our customers with an easy way to get different vessel data.

In our Ship Finder API, Get detailed data about a vessel’s specifications. Find ships name, IMO, MMSI, UUID, Call Sign, country, type, subtype, draft, TEU unit of cargo capacity, deadweight, liquid gas capacity, length, breadth, year built, homeport, and activity status.


The API will save you time from checking on the internet or searching on an online map about vessel details whereas, on the other hand, you can do that by just running an API request.

All that’s needed is to search using the MMSI or IMO number of the vessel. 

The ship specs API endpoint returns a response like this:

Response Example:

You can get your API key in less than three minutes.

Or if you have questions you can contact us at and we will get back to you in less than 24hrs. 

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