Guardian:mark 2017-11-21T09:56:20+00:00


Make assets and hazards visible to marine vessels

Oil & Gas protection

A Complete Shore Station

Guardian:mark enables you to make hazards at sea visible when physical buoys are not appropriate, are expensive or impossible to deploy. Combining our Virtual AIS Station with cloud based software, it takes advantage of Vesper Marine’s unique AIS technology to enable organizations within the oil & gas, energy, offshore fishing, aquaculture, marina or port sectors to enhance safety of their people and assets.

With secure cloud access for configuration and creating virtual AIS marks or virtual buoys, Guardian:mark allows marine asset owners or authorities easy installation with secure remote access from anywhere.

Guardian:mark enables you to:

  • Mark hazards or protection zones providing visibility to vessels

  • Allows virtual marks or virtual buoys to be placed in locations where it is impossible to install physical markers

  • Add, remove or change positions of virtual marks or buoys according to changing conditions such as tide, wrecks or temporary safety areas

  • Cloud access with strong encryption facilitates secure configuration from anywhere

Guardian:mark Benefits

Cost effective

Eliminate the need for expensive installation and maintenance of physical buoys or infrastructure.

Tough and reliable

Fully waterproof (IPx7) for external mounting using either mains or DC power


Place up to 65 virtual marks or virtual buoys up to 25 nautical miles away (depending on mounting height)

Fast and simple

Everything you need is provided, setup and configuration is easy

Flexibility is standard

Move or create new virtual marks to reflect changing conditions, safety zones, etc


Protected communication to and from your Station for privacy and data integrity

International Standard

AIS Virtual Aids to Navigation are recognized by the International Maritime Organization


Virtual AIS buoys are used all over the world to protect assets and people every day

What is Virtual AIS?

When a Virtual AIS Station is deployed and marking hazards such as reefs, wrecks and marine infrastructure such as offshore platforms or wind farms, a ship’s existing onboard equipment* is able to alert crews that they are on a collision course with the hazard  or infrastructure well before they come in contact with it.

Using the international AIS standard, the Virtual AIS Station allows you to remotely create electronic “marks”.  These marks are called “Virtual Aids to Navigation” (VAtoN) or virtual marks or virtual buoys.  They are visible to any vessel with AIS enabled equipment.

Uses for Virtual Aids to Navigation include:

  • Marking shipping channels, used to “join the dots” between physical buoys to improve shipping lane visibility

  • Marking areas where navigation conditions change frequently, including; overhead clearance, ice, tidal levels, weather, etc

  • Marking both visible and invisible hazards, including; cables, pipes, underwater equipment, bridges, offshore platforms, jackup rigs, marina/piers, wrecks, reefs or shellfish beds

  • Marking moving hazards such as sand bars to regularly provide changes in location and provide alert warnings

  • Create temporary cordons around events such as repairs, yacht races and swim courses or other exclusion areas such as hazardous spills, marine protected areas, etc

* Information displayed on board depends on type of equipment and/or navigation software being used.

Oil & Gas protection
Oil & Gas protection

Why use AIS?

AIS is used by most ocean going vessels and is becoming commonplace on light commercial and recreational marine vessels.

In 2009 The International Maritime Organization (an agency of the United Nations) mandated that all ships on international voyages must be fitted with an Electronic Chart Display and Information System (ECDIS). Compliance timing varied by size of vessel, with the final window closing in July 2018 for cargo vessels between 10,000 and 20,000 Gross Tonnes. Many local marine authorities are extending this requirement to light commercial and recreational vessels (eg. US Coast Guard requirement for AIS on smaller commercial and fishing vessels).

An ECDIS integrates GPS, radar, AIS and other navigational sensors with electronic navigational charts.

What about vessels that aren’t ECDIS-ready and therefore don’t have AIS? Within a short period, all large vessels capable of damaging cables, pipelines, will be AIS enabled. Why wait when you could be preventing incidents by the majority of vessels now?

How Guardian:mark works


Remotely mark your undersea assets with Virtual Aids to Navigation so they are visible to vessels through their on-board AIS systems

Find out how we can help

Phone +64 9 950 4848, Fax +64 9 950 4085
Address 45 Sale Street, Freemans Bay, Auckland 1010, New Zealand

  • This field is for validation purposes and should be left unchanged.