Chartwork for deck officers - What are Tidal diamonds?

[@shreyanyadav7270]

Thankyou sir

[@HasiBonD]

Thank you sir..😍😍

[@KundanPatna]

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[@accidentallygenius7211]

Useful

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[@manu2sv]

How to find tidal diamond on ECDIS??

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[@ankitmariner2086]

Thanks sir

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