Boeing Offers Additional F/A-18 Sale to U.S. Navy

In article , "Paul J. Adam"
wrote:

In message , Harry Andreas
writes
In article , "Paul J. Adam"
wrote:

In an underkeel detonation (influence-fuzed mine or torpedo) armouring
the hull stiffens it. So, instead of fairly vigorous movements, flexing,
and whipping - like the USS PRINCETON in 1991 - you get more transmitted
shock, which tends to do more damage to systems mounted to the hull.
PRINCETON set off two mines, was significantly damaged, but was able to
get key systems back up, resume her duties as AAWC and await relief and
a tug back to Bahrain: two months after that she returned to the US
under her own power (though she did need a fair bit of repair)

HMS Belfast ran over a mine in late 1939, was similarly sized to
PRINCETON, suffered nineteen casualties, mostly broken legs and ankles
from the shock, and had such serious shock effects that her torpedo
tubes were thrown off their mounts. (She also had major problems from
cast-iron pipes and machinery bases shattering, but that was an issue
quickly designed out of ships). It was the end of 1942 before she
returned to service.

Thanks

--
Harry Andreas
Engineering raconteur