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Author Topic: Tampines Sand Quarry Diving (aka One Fish Lake)  (Read 13771 times)

GreyMatter

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Jabberjaw, Crash, RacerX and I dived at the Tampines Sand Quarry on 13 May 2014, supported by the lovely Npallasi on surface support.

Approximate area of our dive:



Actual dive video:


Video @ Jabberjaw


Highlights:

It's DIVING!
RacerX saw a fish

Lowlights

Still thinking about this  ::)

Features:

Vis about 1.5 meters
Once we descend below 7 meters, it becomes a night dive
Treasure hunt for empty beer cans, discarded tyres, crashed RC aircraft wreck, trees and branches.
Loamy, silty bottom, average dive depth between 10 to 15 meters, although some parts of the quarry is significantly deeper than 15 meters
Temperature 28 deg C lowest recorded

Shout out to Sara! for her great tip on scuba tank supplier!
Dive Long and Prosper - RIP LN

dp4610yz

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Re: Tampines Sand Quarry Diving (aka One Fish Lake)
« Reply #1 on: 14 May 14, 18:01 »
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  • Wah!!  Okie.. Amazingly barren.. But thanks for the exploration..
    PADI - OW
    SSI - AA aka AOW
    PADI - Rescue
    PADI - DMT

    npallasi

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #2 on: 14 May 14, 18:25 »
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  • On an earlier exploration (Sat 10 May), we observed an eagle successfully grab a fish from the surface of the quarry.

    And on Vesak Day, we saw two groups release fishes, frogs, eels, turtles, birds and chicks into the quarry and its surroundings.

    So there are fishes and other living things around, the question is whether they were avoiding us and whether the Vesak Day newbies will survive.

    GreyMatter

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #3 on: 14 May 14, 18:43 »
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  • I guess we are spoiled diving in the coral gardens of the ocean and expecting to see the same concentration of life in a fresh water lake.

    Unfortunately most of the wildlife in a lake like the quarry would most likely be a) near the shore, or b) near the surface as the fish feed on insects, which is why an eagle can grab a fish with its talons.

    Diving to the deeper areas may actually be counter productive and there may actually be very little life in the depths.

    Any marine biologist around who can comment?
    Dive Long and Prosper - RIP LN

    BareBear

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #4 on: 14 May 14, 18:52 »
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  • Nicely done guys. :)

    GreyMatter

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #5 on: 14 May 14, 22:08 »
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  • Some elaboration on our dive preparation for this unfamiliar body of water.

    Jabberjaw and npallasi did some snorkeling a few days earlier to check out the location.

    We surveyed the shore area again a few days later, going up and down the north east shore line and  discussed the pros and cons on various entry/exit area, and checked these areas physically to ensure that these points were easily reached, with surfaces that were not too challenging (no sticky mud etc). We also tried to ancipate the depth of water based on the terrain, but because the quarry was artificial, I think our guesses on the quarry profile was not entirely correct.

    Crash prepared maps of the lake, and we used this for our mapping.

    On dive day, we had 4 divers, split into 2 groups, with npallasi as the least experienced diver remaining on land supporting the divers. A dive plan was discussed, with discussions on depth, air and and time limits. Areas to survey was also discussed, with the first group diving to a more conservative plan.

    We had the necessary dive and safety equipment, including shears/knifes, torches and backup, SMB, compass.

    When the first group descended, the other 2 divers remained on the surface with binoculars and a map, we tracked the bubbles from shore and followed the divers as the swam along a pre-agreed path. The divers navigated with a wrist compass. The surface trackers used a GPS unit to track their shore location, and estimated the location of the divers - these locations were marked on the map every 5 minures.

    After the first group ascended, they briefed the second group of divers who then, based on input from the earlier divers, planned their dive to explore another area. Again, we had a strict dive plan and direction to follow. Again, the second group were tracked on the surface via their bubbles.

    We initially thought of dragging a SMB on the surface, but there was a concern that the SMB line could get entangled on fishing lines or submerged branches, so that plan was abandoned.

    In the end, it was a good exercise, going through our training, and I think we all learned something new, even though we did not find anything too interesting in the dive site itself.

    Anybody else with additional points to add?
    « Last Edit: 14 May 14, 22:11 by GreyMatter »
    Dive Long and Prosper - RIP LN

    Crash

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #6 on: 14 May 14, 23:01 »
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  • Great report greymatter. The dive was properly planned out with proper dive plans and equipment and contingency plan. It was a really good experience and a good chance to practice navigation in the absolutely horrid visibility water. Thanks to everyone involved. Will post the updated map ASAP when I got some time to sit and edit.


    My reason and motivation for the dive:

    « Last Edit: 14 May 14, 23:05 by Crash »

    Ryoin82

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #7 on: 15 May 14, 00:08 »
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  • Great job guys! Hopefully one day we can find a place locally other than hantu that allows owd to take place!


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    jabberjaw

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #8 on: 15 May 14, 10:06 »
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  • Just a point to add also. Even though we dived at an area furthur up the water, we also informed nicely to the RC guys next to our dive grounds on divers below. They gladly suspend their RC demon-power boating activity during the course of our dives. We informed them again once the dives have been completed and they continued after that. Pretty cool bunch of guys. They told us if we were to dive again, pls inform them again for safety.

    racerx_

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    Re: Tampines Sand Quarry Diving (aka One Fish Lake)
    « Reply #9 on: 15 May 14, 10:32 »
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  • it was a good time and good hanging with like-minded divers. I think it was actually a beneficial exercise for those unfamiliar with very poor visibility environments which we dont usually encounter in our south East Asian dive sites. Buddy protocol, gear checks, briefings, and dive plan become much more important. We decided to run quite a conservative plan for air consumption, depth, etc since it was an unfamiliar environment. Not much to see, but a dive is a dive! and i got to use my compass for the first time since AOW lol