Unit

Response to Ship

Response to Sweeps

Aircraft Sweep

With GB

Without GB

LL Astern
GB at Bow

Detonator
Sweep

Magnetic

Acoustic

M 1

Sweepable

Sweepable

M 3

Sweepable

Sweepable

A 2st

Danger

No danger

Explodes
close to
ship

Sweepable

Sweepable

A 4st

Danger

No danger

Explodes
under
ship

Generally
no result

A 4

Danger

Generally
no result

Generally
no result

AT 2

Danger

Danger

Sweepable
only with
low fre-
quency GB

Sweepable

MA 1

Little
danger

Danger

Sweepable

Sweepable

Sweepable

MA 1st

Danger

No danger

Sweepable

Sweepable

MA 2

No
danger

Danger

Usually
unsweep-
able

MA 3

No
danger

Danger

Usually
unsweep-
able

MA 1ar

Danger

Danger

Usually
unsweep-
able

Sweepable

Sweepable

DM 1

Danger

Danger

Swell
sweeping
or sweep-
ing when
long waves
present;
both
possible