HMS Mashona

[Vic Dale]

Hi Dan.

I have dug out the full table for you;

Deg. Advance Tactical diameter (both in yards)
15--- 118----- 1412
20--- 678----- 1033
30--- 590----- 815
35--- 532----- 915

The tactical diameter at 35 degrees seems to suggest rudder drag and was perhaps not the best angle of helm in tight spots, though it did get the ship turned 90 degrees in a shorter distance. Something of a trade off.

Vic

[lwd]

Interesting one of the sources I found said that for most DDs it was approximately 500 yards at 33 knots. I wonder if it was just a rough estimate or a bad one.

[RNfanDan]

Hi Dan.

I have dug out the full table for you;

Deg. Advance Tactical diameter (both in yards)
15--- 118----- 1412
20--- 678----- 1033
30--- 590----- 815
35--- 532----- 915

The tactical diameter at 35 degrees seems to suggest rudder drag and was perhaps not the best angle of helm in tight spots, though it did get the ship turned 90 degrees in a shorter distance. Something of a trade off.

Vic

Thanks, Vic--but at what speed are these tables calculated? It is not apparent to me from the data shown.

[Vic Dale]

Hi Dan.

All figures are at 33 knots.

Vic

[Dodd]

My great-uncle was Stoker first class on the Mashona. Unfortunately, he was one of the fatalities and died on my grand-mothers [his sister] birthday [28th May]. His name was George Boorman.