Sewage Treatment Systems

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Marine Sanitation Device MSD Series

AHEAD TANK Type II Marine Sanitation Devices are United States Coast Guard Certified in accordance with USCG Title 33 Code of Federal Regulations (CFR) 159 and complies with USCG Title 33 CFR 159.97 and may be installed aboard inspected vessels.

Sewage Treatment Plant STP Series

AHEAD TANK Sewage Treatment Plant STP series are accepted worldwide in accordance with International Maritime Organization (IMO) Resolution MEPC .227 (64) to meet operational requirements referred to in regulation 9 of Annex IV of the International Convention for the Prevention of Pollution from Ships (MARPOL).

AHEAD TANK STP Series also complies with USCG Title 33 (CFR) 159. and (CFR) 1159.97 and may be installed aboard Inspected Vessels.

U.S.C.G Certified Marine Sanitation Device

MSD Model
Number of People ( 24 hours)
Disinfection System
Flowrate (gal. per day)
USCG Approval No.
AT-6T
6
Tablet
56 gallons
159.015/9971/0
AT-12T
12
Tablet
88 gallons
159.015/9972/0
AT-16T
16
Chlorine Solution
88 gallons
159.015/9973/0
AT-20T
20
Chlorine Solution
110 gallons
159.015/9974/0

U.S.C.G Certified & IMO Approved Sewage Treatment Plant

STP Model
Number of People (24 hours)
Disinfection System
Flowrate (gal. per day)
USCG Approval No.
AT-10STP
10
Tablet
56 gallons
159.015/10175/0
AT-10STP-D
10
Chlorine Solution
56 gallons
159.015/10175/0
AT-18STP
18
Tablet
88 gallons
159.015/10175/0
AT-25-STP-D
25
Chlorine Solution
88 gallons
159.015/10176/0
AT-35-STP-D
35
Chlorine Solution
110 gallons
159.015/10176/0

AT-10STP

AT-10STP-D

AT-18STP

AT-25STP-D

AT-35STP-D

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