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Rich_AR
Original Poster
795 posts
73 months
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I was recently tracking a shipment of mine and all stopped when the ship entered the Suez canal. I know that some ships switch off the AIS tracking for safety reasons (I assume to hide their location from Somalian pirates etc) but does anyone have any idea when they switch the AIS back on?! It's been 8 days since the last known update... Bit of a random question, I know... 
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Pothole
18,050 posts
151 months
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It may have sunk, or the AIS may have failed...what's the name of the ship?
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Rich_AR
Original Poster
795 posts
73 months
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Pothole said: It may have sunk, or the AIS may have failed...what's the name of the ship? Ha, that's what I was thinking... It's 'MAERSK SEMARANG'
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Le TVR
2,233 posts
120 months
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Rich_AR
Original Poster
795 posts
73 months
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Le TVR said: They only recommend it to be switched on, but still up to the Master. So I assumed he switched it off... maybe forgot to turn it back on or it's sunk.
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Gazzas86
725 posts
40 months
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I have been up and down the Suez a fair amount of times, you may find the vessel has anchored up in the waiting area, to wait for the convoy to come through.
I have an AIS tracker on my phone, and i do find the ships i track drop in/out. Could be due to the amount of interference from having so many ships/vessels in close proximity.
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Popeyed
453 posts
88 months
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The last position update I can find was on 5th October, she is giving her ETA at Western Pilot Boarding Ground Alpha, off Singapore as 1200 on 13th October 2012.
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Rich_AR
Original Poster
795 posts
73 months
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Popeyed said: The last position update I can find was on 5th October, she is giving her ETA at Western Pilot Boarding Ground Alpha, off Singapore as 1200 on 13th October 2012. Yup, it's due in Singapore on the 13th. Where is WPBGA? (Sorry I know nothing about shipping!)
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Popeyed
453 posts
88 months
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Rich_AR said: Popeyed said: The last position update I can find was on 5th October, she is giving her ETA at Western Pilot Boarding Ground Alpha, off Singapore as 1200 on 13th October 2012. Yup, it's due in Singapore on the 13th. Where is WPBGA? (Sorry I know nothing about shipping!) It's at the western end of Singapore (obviously), so I assume the vessel is proceeding to Pasir Panjang container terminal. It does not take long to proceed from the pilot boarding station to the berth, a couple of hours max I would guess. Also, bear in mind that AIS works on VHF, therefore line of sight only, so when out of sight of an AIS shore station the vessel will not show on AIS tracking. The vessel should reappear on AIS when she passes by the northern tip of Sumatera in the next day or so.
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Rich_AR
Original Poster
795 posts
73 months
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Popeyed said: It's at the western end of Singapore (obviously), so I assume the vessel is proceeding to Pasir Panjang container terminal. It does not take long to proceed from the pilot boarding station to the berth, a couple of hours max I would guess.
Also, bear in mind that AIS works on VHF, therefore line of sight only, so when out of sight of an AIS shore station the vessel will not show on AIS tracking. The vessel should reappear on AIS when she passes by the northern tip of Sumatera in the next day or so. Thanks for the info, it's finally appeared.
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