UFC 4-213-12
19 June 2003
Table 18 Portsmouth Naval Shipyard Drydock No. 3
Date Completed
Suitable for Docking
Foundation
Construction Material
1962
SSBN
Rock or
Concrete
piles
Closure
Caisson, steel (rectangular box type).
Dewatering Pumps Two 36", 300 hp, 60,000 gpm. Time to dewater: 185 min
Drainage Pumps
Two 8", 40 hp, 3,000 gpm
Through culverts. Time to flood: 120 min.
Superflooding pumps: two 24", 50 hp, 20,000 gpm
Captstans
5 total: 1 at head, 30 fpm at 24k; 1 south side of entrance,
1 north side and 2 south side, 30 fpm at 12k. 1 winch; north
side of entrance, 30 fpm at 12k
Portal Crane Maximum Capacities and Heights
Hook
5 ft beyond dock
Max height above coping with hook at dock
centerline
centerline
124'6"
50 lg tons
Main
148'11"
15 lg tons
Auxiliary
144'10", 65'6" min radius
5 lg tons
Whip
Ship and Industrial Services Furnished at Dock
Electrical
Volts
Amp
1 north at 2200A; 1 south at
8,400
460
Ac, 3 Ph, 60 Hz
4000A
2 north, 6 south at 400A;
3,000
460
Ac, 3 Ph, 60 Hz
1 north at 800A.
2 south at 2,000A
4,000
375
Dc
Fresh water_________4" south and 6" north side mains, 400 gpm at 65 psi,
five 2-1/2" outlets north side, ten 2-1/2" outlets south side.
4" headers at dock floor with outlets
Pure water _________ Two 1-1/2" south side mains, 60 psi, twelve outlets
Salt water_________ _6" and 8" main, 2,500 gpm at 90 psi, ten 2-1/2" outlets north
side. 4" headers at dock floor with outlets
Fire Protection _______Same as salt water and fresh water
LP Air______________4" north and 6" south side mains, 100 psi, nine 2" outlets
north side, 2-1/2" and two 2" outlets south side. 4" headers
at dock floor with outlets
HP Air________ _____ 1" main, 4,500 psi, four 1/2" outlets south side
LP steam __________ 2" north and 6" south side mains, 7,400 phr at 100 psi,
ten 1-1/2" outlets north side, one 4", eight 2-1/2" and
one 1-1/2" outlets south side
HP steam __________ 6" main, 600 psi, one 6" outlet south side
Oxygen ____________1-1/2" mains, 110 psi, five 3/4" outlets each side
Sanitary sewer _______4" south side main, 200 gpm, one 4" inlet
MAPP gas __________1-1/2" mains, 15 psi, five 3/4" outlets each side
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