Hi Chris.

You're really smart. I won't ask you how you understand when it's time to return your boat, it will certainly be the result of experience with your models. Maybe you understand it from some small warning.

Sorry if I dwelt on the explanation of the buoyancy reserve, it was for those who didn't know.

When you have time, if you feel like it, could you give me some information on the RC Flysky you mentioned?

Hi Alessandro, with regards to low battery signal, one of the rc units is flysky which monitors both charge levels in the handset and the boat. Otherwise, I play it by ear and sight, up to now I personally can gauge as to how much run time I have and make sure whatever I'm sailing is back to the shore before the power runs out. . If sailing at the lake alone I always have another vessel running off another handset which acts as a recovery boat. Just in case.
Buoyancy aids in boat-normally all good, except this morning when the cockpit became dislodged and buoyancy floated away 🤣. Lesson learned.

Hi Chris.
Hi Bill.
Hi everyone.


As regards the sinking of your patrol boat, I take inspiration from this unfortunate event (it was resolved well only because the seabed was shallow), to say that all models can be made unsinkable with small precautions.

In theory, all ships could be unsinkable, but for real ones it's just theory, but for scale models it can actually be done.
Not for everyone, but almost.

Surely you already know it but I'm saying it for those who maybe don't know or are starting now:

1. Weigh the model. For example it weighs 4 kg.
2. 4 kg is equivalent to approximately 4 dm3 of fresh water (i.e. 4 litres).
3. I take cubes or parallelepipeds made of very light material that is not impregnable with water and easily cut, such as polystyrene, for example. I have to take a little more than 4 dm3. Let's say 4.5 dm3 to be safe. It's very simple because it's a 10cm side cube.
If you have light strips of material, that's fine as long as you are able to calculate their volume (B x h x L), so it's very easy with square (orthogonal) figures such as cubes or parallelepipeds.
4. By cutting this material in the way that best suits the model, you will have to insert it into all the empty places where it is possible to do so. I've seen a lot of your models with huge gaps.

I assure you that if a model weighing 4 kg has 4.5 dm3 of light material such as polystyrene inside it (well blocked) it will never sink.

For example, Caio has a piece of polystyrene (or similar) one meter long, 20 cm wide and 4 cm thick.
The total volume is 1000 x 200 x 40 mm = 8,000,000 mm3 = 8,000 cm3 = 8 dm3.
Therefore Caio will only need to use a little more than half (4 dm3) of this piece of polysitorol (or similar) to cut into many small parts to insert and secure well inside the model. The aesthetics will not be affected because everything is hidden.
I say just over half because polystyrene (or similar), however light, has its own weight.


Attention. This system does not prevent damage to electronics due to hull flooding.

Hi Chris, you certainly weren't bored today.
Hi Bill.
Hi everyone.

I wanted to ask you: do you have a system to notice that the battery is running out?
For example, do you make a rough estimate of consumption, and do you return it to port a little earlier to be on the safe side?
Or do you have an electronic signaling device?

Since I don't consider these consumption estimates very reliable, I would like to test a system for reporting consumption.
Certainly you can use the telemetry of radio controls which provide information on the status of the batteries and more, as for drones.
These are things that are still a little too complicated for me and perhaps even too expensive.
Many of you will probably feel that they are wasted on a ship model that can always be salvaged. The situation is different for those who fly, the need is more pressing.

For this purpose I had designed a small electronic circuit, easy to make, very economical.
However, it should be tested.
I intended to test it on another ship model that I have already finished. It's more of a toy that I made for my son when he was little, but it lends itself to various experiments because it has a large displacement.
The signal I have foreseen is light but could also be acoustic.

What do you think?

Chris.
OMG!!! I think you can classify today as an eventful day mixed no doubt with many expletives.
I bet the air was blue.
Let’s hope that not too much damage has been done with water ingress.

Can’t wait to see more pictures of HMS Nelson when she passes builders trials.
Regards
Bill.

A visit to the lake with the club this morning proved eventful 😄.
HMS Nelson had another short run, after I've adjusted the ballast, managed one photo and then she stopped dead. Was rescued and rebound the receiver and all good.
Then sailed my trawler (Veron from the 1960's) as she's not been used recently, happy days till battery died, no rescue needed.
Lastly took the patrol 🚓 boat out, sped over the surface, then shipped some water and was swamped by the wake of a passing PT boat. Fortunately she sank near the edge of the concrete ramp and after about 10 minutes of "fishing ", she was resurfaced. Currently now stripped down and drying out. Not sure what is salvageable but I'll find out in a few days.