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with CIO+ Services

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CIO+ Services

ChartWorld Information Overlay, known as CIO+, is a data overlay shown in ECDIS as a user chart, loaded on top of Electronic Navigational Charts. CIO+ is designed to help the bridge team with the task of voyage planning and execution. CIO+ automates the process of applying additional data in ECDIS, by means of User Chart Objects.

CIO+ Services at a Glance

We have compiled all relevant information on our CIO+ Services for you to download. If you need more information or have any questions, please send us an email using the form below. 

StayAway Areas

Poor positional accuracy of charted obstructions has played a certain role in grounding incidents of vessels for many years. For this reason, ChartWorld has developed an additional CIO+ layer, based on new technologies that take information from below the water surface, derived from highly-accurate satellite images, and place it on top of ECDIS systems.

This provides mariners with the most accurate information on shoals and underwater obstructions that may not be accurately represented on current charts.

The new StayAway Areas from ChartWorld give mariners a more complete perspective.

CIO+ StayAway Areas

Make navigation safer from a new perspective
  • Making hidden shoals, derived from satellite images, visible
  • Covering areas with CATZOC worse than A2
  • Available for the Philippines, Indonesia, Caribbean Sea. More to come
  • Risk-mitigation tool for cases where your vessel needs to deviate from the main traffic lines
  • Delivered in real-time via the ChartWorld NavCloud service
  • ECDIS alarms will be triggered if vessels approach potentially unsafe areas

Introducing StayAway Areas

Detecting hidden Shoals from Space

CIO+ StayAway Areas

A new perspective - Please use the slider element to discover the improved chart accuracy

CIO+ StayAway Webinar Part-1

October 27th, 2021

CIO+ StayAway Webinar Part-2

November 3rd, 2021

CIO+ / Compliance with OCIMF's SIRE 2.0

June 1st, 2022

ChartWorld CIO+ StayAway

Evaluation of ChartWorld CIO+ STAY AWAY area data relevant to Various grounding cases (mentioned in Guard report; 07 JUL 2020, "Grounding incidents in the Indonesian archipelago" by Siddharth Mahajan)
Analysis of Grounding Locations vs. CIO+ StayAway
Results case by case - Analysis of Grounding Locations vs. CIO+ StayAway Area of interest: Indonesian Archipelago
Case Study 1 - Grounding Karimata Strait
Year:    Vessel: Bulk Carrier    Draft: 13 m    Voyage: Indonesia to Japan via Karimata Strait
CATZOC: C (±500m positional accuracy). No isolated danger at grounding position
Traffic Density 2019 Map
Case Study 2 - Grounding Karimata Strait
Year:    Vessel: Very Large Crude Carrier    Draft: 20 m    Voyage: US Gulf to Japan via Sunda Strait - Karimata Strait
CATZOC: B (±50m positional accuracy) No isolated danger at grounding position
Traffic Density 2019 Map
Case Study 3 - Grounding off Selat Sape
Year: 2018    Vessel: LPG Tanker    Draft: 8 m    Voyage: Indonesia to Australia via Selat Sape
CATZOC: C (±500m positional accuracy) Prior to the incident, the ENC showed one rock only (orange arrow). The second rock was inserted at the grounding position after the accident. 
Traffic Density 2019 Map
Case Study 4 - Grounding Makassar Strait
Year:    Vessel: Bulk Carrier    Draft: 14.3 m    Voyage: Tobonao, Indonesia to South Korea
CATZOC: C (±500m positional accuracy) Isolated danger inserted at grounding position (apparently after accident).
Traffic Density 2019 Map

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NoGo Areas

The service dynamically creates an additional demarcation line that is drawn on top of the ECDIS ENC (User Chart).

This line is drawn on both sides of the route and it is used as an additional reference when a vessel has to find its way through waters "behind" the safety contour, which are still considered as safe. In this respect, the NoGo line demarcates regions that must not be entered (i.e., NoGo) at all.

To process NoGo data, the service in the ChartWorld BackOffice takes the route information and the safety contour settings of the vessel. Then NoGo Areas are derived from those spot soundings and underwater obstructions (wrecks, rocks, obstructions) that have a depth value that is equal to or is less than the ECDIS safety depth.

The NoGo features are sensitive to ECDIS alert functions. Moreover, the service recognizes the need for an additional margin of safety, through the use of CATZOC. This guarantees that inaccuracies – which are inherent to all charts - are taken into account.

The regular CIO+ distribution processes take care of delivery of the CIO+NoGo Areas to the vessels.

CIO+ NoGo Areas

Automated outline of dangerous areas for the voyage
  • Comply with OCIMF, Rightship and PSC requirement
  • Reduce the workload of the navigational officer
  • It is a risk-mitigation tool that NoGo areas are entered in the ECDIS and in use
  • Using official ENC data in a combination of ECDIS functions, to improve the safety of approaches
  • Automated NoGo lines, based on the safety-contour values of the ECDIS voyage plan  
  • Real-time data supply as part of the NavCloud service
  • ECDIS alarm when approaching the NoGo line

CIO+ NoGo Areas

Please use the slider element to discover automated outline of dangerous areas for the voyage


CIO+ NoGo Lines - ChartWorld International

Radio ECDIS, Date 2023/7/7

T&P Notices to Mariners and NAVAREA Warnings

CIO+ T&P Notices to Mariners and NAVAREA warnings combine global UKHO T&Ps, local T&P NtMs, and NAVAREA warnings, in providing a comprehensive and enhanced update service for vessels navigating worldwide.

CIO+ T&P Notices and NAVAREA Warnings

  • Automatically plots T&P notices on your ECDIS
  • CIO+ is updated weekly or on-demand, to include, in a User Chart, all T&Ps for the intended voyage.
  • ECDIS user chart formats supported: eGlobe G2, Furuno FMD, Transas NS4000 and JRC ECDIS 9201/7201
  • Includes T&P NtM published by UKHO and Hydrographic Offices of China, India, and Colombia, where not already included in ENCs
  • CIO+ NAVAREA data for the whole voyage, not only within the range of NAVTEX or VHF
  • CIO+ NAVAREA is suitable for voyage planning and complements NAVTEX and radio warnings' services during execution of the voyage.


CIO+ Environmental is designed to help ships to comply with MARPOL and
other environmental regulations.

The CIO+ Environmental is delivered as a user chart; along your planned route, it indicates intersections with special areas defined in the IMO MARPOL Convention, as well as in other national and international environmental regulations.


  • Special areas taken into consideration by the CIO+ Environmental:
    MARPOL Annex I – Oil, MARPOL Annex II Noxious Liquid Substances, MARPOL Annex IV. Sewage, MARPOL Annex V. Garbage, MARPOL Annex VI, Emission Control Areas (ECAs), Special areas defined in China ECA regulations, Port ECAs defined by EU Sulphur Directive 2005/33/EC
  • Limits of MARPOL and ECA areas are defined from national baselines.
  • ECDIS indicates the planned route's entry into, or exit from, areas with environmental restrictions. ECDIS alarms in route-planning and route-monitoring modes when approaching special areas. Area boundaries intersecting the route are prominently displayed in ECDIS.

Get In Touch

For more information and solutions on this topic, please send us an email.

Related Products & Services

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MyFleet is a web application, intended for use in a shipping companies office or by the shipping company staff at travel or at home.