I recognize this is a bit of an old thread, and I welcome any redirect to a more current conversation. I recently started working for the Navy on AI for autonomous navigation of mid-sized to larger vessels (100’ to 1000’) in threateningly high seas (8m or greater wave height), and I was wondering, …

[image] freighterman1: An important thing to remember is this: what the ship can take and what the cargo can take are two different things. A ship can easily survive a storm but come back with damaged cargo because of heavy rolling, etc. But it’s not just the degree of motion or period of the ro…

Thanks to everyone for your input. That’s interesting. I wonder if anyone has come up with a measurement system to try to quantify “how badly the ship is moving under your feet”, by which I assume you mean flex and give in the mechanical superstructure of the vessel? There is also the idea of the s…

[image] MAW: I wonder if anyone has come up with a measurement system to try to quantify “how badly the ship is moving under your feet”, by which I assume you mean flex and give in the mechanical superstructure of the vessel? There is also the idea of the ship not going the direction it is being…

T he Theory and Practice of Seamanship

[image] MAW: Plus for the Navy, two days in overhaul for every day out is common What, this must be a joke…

[image] MAW: , you talk about throttle adjustments, but to what end? Is it a matter of trying to keep constant speed and power going up and down these large hills of water? In my experience on a small coast-wise ship while hove-to or nearly hove-to in head seas, as the ship climbs the face o…

This is not a joke. 2 to 1 is something an aircraft maintenance guy told me as a rule of thumb. If you look at something like this: https://www.globalsecurity.org/military/ops/where.htm Anywhere it says “home port”, “sea trials”, or “selected restricted availability (SRA)” that means “not deployed…

I see what you mean, quite a difference with the merchant marine where there is sometimes hardly time to spare to carry out necessary maintenance, cleaning/painting of the hull and cleaning of the propellers etc. BTW, you could search gCaptain with the term ‘unmanned ships’. You will find a number …

Merchant ships are losing money when not moving. With the military at-sea operations are going to cost more than in-port.

Seakeeping for Autonomous Ship in Heavy Weather

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Seakeeping for Autonomous Ship in Heavy Weather

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