Sib coding?

[diverdad]

I have been asked about SIB coding. I checked mgn 280, which is a little generic. I then checked the archives on here and saw the post about coding for a sib from a mother vessel to a beach.
But I think that the question I was asked is a little more task specific.

What coding would a sib, (zodiac future mk 2, with 30hp outboard), need for hydrographic surveying.
I am assuming it is within a tidal estuary. They will want the shallow draught of the sib where the big vessel cannot fit.

Thanks in advance for any constructive advice.

Lee

[Poly]

Mgn280 still applies if the boat is being used “at sea”. A tidal estuary may not actually be “at sea” within the regulations.

Is the intent to run it as a daughter craft or on its own?

[diverdad]

Yes I think so.

[diverdad]

Sorry, on its own.

[ShinyShoe]

So - if it is sea as defined by the act...

Category 6: To sea within 3 miles from a nominated departure point(s) named in the certificate and never more than 3 miles from land in favourable weather and daylight.
Category 5: To sea within 20 miles from a nominated departure point named in the certificate in favourable weather and daylight.
Category 4: Up to 20 miles from a safe haven in favourable weather and in daylight.

Cat 4, 5 or 6 would be your requirement. Cat 6 may be enough - IF you only want to code for one port...

You would presumably only survey in good weather and daylight?

But you will still need to carry a LOT of kit youd probably think pointless. The worst being a life raft.

You'd be better taking an approach to either be a daughter craft, or depending on the estuary a local council licence possibly with two craft of similar size if need be to cross cover.

[Last Tango]

I would check the water's classification. MGN280 reference of "going to sea" refers to vessels proceeding seaward from categorised waters. Otherwise it will fall under the inland waterways code.
https://www.gov.uk/government/public...nger-boat-code

If you read this you'll find, that unless it has been adopted as regulation by a relevant harbour authority, compliance is voluntary.
I have discussed and confirmed this with Clydeport's assistant harbour-master in regard to use in the Clyde estuary.
Your problem may be if you're using the boat in different harbours different local regulations might apply.
I can't remember where it was I read it but I'm sure there is also some mitigation for vessels under 6 mtrs. Worth looking into.