ACR Electronics ENGLISH Manuel d'utilisateur télécharger pdf (Page 1)

CIRCULARS / HSQE BULLETINS

T0:

APPLICABLE FOR:

MASTER ALL VESSELS

CHIEF ENGINEER TANKER VESSELS

TANK FARM

DOCUMENT TYPE:

SAFETY BULLETIN DOCUMENT NO.

ENVIRONMENTAL BULLETIN ISSUE DATE (dd/mm/yy)

28/11/2007

HEALTH & HYGIENE BULLETIN SUPERSEDES EXISTING DOCUMENT? YES NO

TECHNICAL BULLETIN If YES state PREVIOUS DOCUMENT NO. N/A

CASUALTY REPORT REVISION NO.

N/A

REVISION DATE

N/A

CIRCULAR LETTER

SUBJECT:

AIS ERRONEOUS TRANSMISSIONS

It has become evident that a small number of the ACR/Nauticast AIS systems transmit a

default MMSI (1193046). This has the potential, in certain circumstances, to cause 'target

swap' with a possible consequence that more than one vessel can appear as a single

vessel.

According to ACR/Nauticast Technical Information, there are two potential causes of the

problem:

1. The vessel's MMSI may not have been entered at installation.

2. The system memory reverts to default value when external power is lost and the

internal memory backup battery becomes discharged.

The ACR / Nauticast has taken substantial steps to rectify the problem. The Technical

Information attached details the actions required to be undertaken by the vessels

equipped with such instrument, at the first suitable opportunity.

It is possible that the same problem exists on AIS equipment with the following trade

names, to which the attached Technical Information also applies:

- Raytheon Marine RM808 AIS

- ACR Global Watch UAIS

- Marine Technologies Bridgemate AIS

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Page 1 - CIRCULARS / HSQE BULLETINS

CIRCULARS / HSQE BULLETINS T0: APPLICABLE FOR: MASTER ALL VESSELS CHIEF ENGINEER TANKER VESSELS TANK FARM DOCUMENT TYPE: SAFETY BULLET

Page 2 - 2/3

2/3 - Nauticast X-Pack DS For further details or additional help, interested parties may contact ACR's Technical Support: ACR Electronics

Page 3

3/3 ACR / Nauticast™ Technical Information Default MMSI SettingsWe have received reports from some administrations who monitor Class A AIS messag

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