Howto:Maritime System Approval – DNV

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This article provides valid documentation and guidelines for commissioning a DNV Type Approved onboard communication and talkback system (DNV TA 848.25 / TA 848.26).


Basic information

The requirement to comply with TA (Type Approval) applies mostly for new builds, and in some cases retrofit.

  • DNV TA 848.25: Internal Communication / PBX Systems
  • DNV TA 848.26: Command Intercom and Talkback Systems

Regardless, the overall content will also serve as a guideline to meet maritime branch "standard" features normally requested and used in daily operations.

Documentation

System certificate

TAA00003DD (Rev 1)

  • Issued: 2026-09-15
  • Expires: 2029-06-02
  • Standards: DNV TA 848.25, DNV TA 848.26, IMO Res. A.813(19), IMO Res. A.694(17), DNV-SI-0364-SOLAS

Link: https://approvalfinder.dnv.com/#approval/TAA00003DD

Innovaphone Maritime Engineering Guide: Rev 2.00

Media:innovaphone Maritime Engineering Guide 2.00 Final.pdf

  • Document ID: iMEG
  • Revision: 2.00 (Updated 2026-08-13)


Architectures

Distributed

Ideal for large fleets; simplifies numbering plans and remote administration across vessels.

On-prem

Allows combining TA-certified hardware in required operational zones with standard devices in non-critical areas.

However, it's important to keep apart which areas must comply with TA, and not.


  • Core TA Gateways: IP811-maritime PBX, IP29-8-maritime Gateway (analog).
  • Talkback Intercoms (TA 848.26): IP17x Series (IP170, IP171, IP172, IP174) — Dedicated hands-free PTT/Command intercom stations.
  • Telephone Endpoints (TA 848.25):
    • Bridge & ECR: IP170 (Flush), IP111-maritime, SC411.
    • Engine Space & Deck (IP66 / Exposed): IP171, IP172, IP174 series, SC220, SC421.
    • Accommodation / Cabins: IP111-maritime.
  • RED Zone: Area within TA requirements (Central equipment and designated operational areas).
  • GREEN Zone: Area without TA requirements (Cabins, public spaces, non-critical offices).


Installation

All installation and commissioning to meet TAA00003DD must be carried out according to instructions in the "innovaphone Maritime Engineering Guide (iMEG Rev 2.00)".

Key installation considerations include:

  • Network isolation using IEEE 802.1Q VLANs or physically dedicated switches.
  • Power redundancy via Dual Ethernet (PoE) / RSTP (IP811-maritim).
  • Correct endpoint selection (e.g., dimmable screens for bridge night vision, IP66 rated units with sounder-beacons/headsets for engine spaces).

Backup

  • TAA00003DD sample backup: (v16rX / srX), Coming soon

Commissioning Checklist

To ensure compliance, final system verification must be executed using the checklist provided in **Chapter 6.0 of iMEG Rev 2.00**.


Known Problems

Related Articles

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