Yes having fun:
https://map.openseamap.org/?zoom=14&lat=-33.50064&lon=151.33839&layers=BFTFFFFFFTF0TFFFFFFFFT

We were discussing today how oyster leases should be marked for maritime
mapping. We think probably a cardinal hazard marker (i.e. a hazard lies to
the N/S/E/W of this marker) rather than the location of the hardware for
growing the oysters.

Of course the places where the oysters grow (sorry I don't know the
technical name for this) are the easiest to see from an aerial photo. This
is normally marked as aquaculture in OSM.

The poles marking the hazard are visible on an aerial photo, but you can't
tell from the photo which ones are hazard markers (and which direction) and
which ones are just poles in the water.

 - Ben.

PS 2019 Sea Doo GTR 230


On Wed, 29 Sept 2021 at 11:29, Graeme Fitzpatrick <graemefi...@gmail.com>
wrote:

> Yes, they're actually a "Special Mark", which can be used to mark anything
> out of the ordinary.
>
> https://www.msq.qld.gov.au/Safety/Navigation-buoys-marks-and-beacons
>
> Have fun! (& what'd you get? :-))
>
> Thanks
>
> Graeme
>
>
> On Tue, 28 Sept 2021 at 13:37, Ben Kelley <ben.kel...@gmail.com> wrote:
>
>> I have recently moved close to Brisbane Water (NSW Central Coast). Aerial
>> photos are quite good if you know what you're looking at.
>>
>> I think buoy_special_purpose is probably the closest.
>>
>>  - Ben.
>>
>> On Tue, 28 Sept 2021 at 13:29, Andrew Harvey <andrew.harv...@gmail.com>
>> wrote:
>>
>>> I can't help much with tagging, but wanted to say good to see someone
>>> else interested in sea mapping, I mapped a small bit of the Georges River
>>> in Sydney via kayak many years ago.
>>>
>>> On Tue, 28 Sept 2021 at 10:39, Ben Kelley <ben.kel...@gmail.com> wrote:
>>>
>>>> Hi.
>>>>
>>>> I'm slowly mapping more and more buoys in my area. The red and green
>>>> channel markers are obvious, but I wondered how to map yellow ones.
>>>>
>>>> I'm guessing that for Open Sea Map it is a "special purpose mark".
>>>>
>>>> Generally they are used to mark hazards. The channel runs close to
>>>> moorings here, so there are yellow buoys between the channel and the
>>>> moorings.
>>>>
>>>> Is anyone else into Open Sea Map? (We bought a boat last week :) )
>>>>
>>>>  - Ben.
>>>>
>>>> --
>>>> Ben Kelley
>>>> ben.kel...@gmail.com
>>>> https://mrebenezer.blogspot.com/
>>>> This message was sent on my Atari 400
>>>> _______________________________________________
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>>>>
>>>
>>
>> --
>> Ben Kelley
>> ben.kel...@gmail.com
>> https://mrebenezer.blogspot.com/
>> This message was sent on my Atari 400
>> _______________________________________________
>> Talk-au mailing list
>> Talk-au@openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/talk-au
>>
>

-- 
Ben Kelley
ben.kel...@gmail.com
https://mrebenezer.blogspot.com/
This message was sent on my Atari 400
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