Part 1 - Aircraft Bombs and Pyrotechnics; Chapter 20: Smoke Float No. 3 Mk I (Obsolescent)Part 1 - Aircraft Bombs and Pyrotechnics; Chapter 20: Aluminum Sea Marker Mk III (Service)
BRITISH EXPLOSIVE ORDNANCE
Part 1 - Chapter 20
Aircraft Pyrotechnics

Aluminum Sea Marker Mk I (Service)
Data
Fuzing None; impact initiated
Color markings Aluminum over-all
Length 4.5 in.
Width 3.5 in. (square)
Weight 1 lb.

Description: The marker consists of a fragile, paper-sided body of square cross sec-tion, fitted with wooden end pieces, and filled with aluminum powder. The outside is coa-ted with aluminum paint. The body is surrounded by a loose cardboard seath to protect it from damage while being handled.

Functioning: When the sea marker is dropped from a plane, the cardboard sheath se-parates from the marker, and the latter ruptures on impact with the sea, leaving a patch of aluminum powder floating on the surface.

Remarks: This marker contains no explosives.

Figure 99 - Sea Marker Mk I

Part 1 - Aircraft Bombs and Pyrotechnics; Chapter 20: Smoke Float No. 3 Mk I (Obsolescent)Part 1 - Aircraft Bombs and Pyrotechnics; Chapter 20: Aluminum Sea Marker Mk III (Service)