repair / overhauling of valves, miscellaneous hull equipments and general inspection of equipments onboard in submarines at nsry ( kar ) - 2 water tightness test of external valve ( eq00001 ) as per jic eq-03-d-002 ( esc trunk hull v / v ) 3 water tightness test of internal valve ( eq00001 ) as per jic eq-03-d-003 ( esc trunk doubler v / v ) 4 water tightness test ( dn00111 ) aft system external hull valve ( depth trim & list monitoring sys ) 5 water tightness test ( dn00112 ) aft system external hull valve ( depth trim & list monitoring sys ) 6 water tightness test dn00141 ( depth trim & list monitoring sys ) 7 water tightness test dn00241 ( depth trim & list monitoring sys ) 8 water tightness test dn00341 ( depth trim & list monitoring sys ) 9 water tightness test dn00211 ( depth trim & list monitoring sys ) 10 water tightness test dn00331 ( depth trim & list monitoring sys ) 11 water tightness test dn00312 ( depth trim & list monitoring sys ) 12 water tightness test dn00212 ( depth trim & list monitoring sys ) 13 sanitary hull valve fq00101 & nrv 14 sanitary hull valve fq00102 & nrv 15 aft wc door dislodged from rails 16 door to shower space 17 ventilation flaps fh14 18 ventilation flaps fh15 19 ventilation flaps fh22 20 ventilation flaps fh26 21 aft batt upstream motorised valve fh00010 22 fwd batt recovery isolating motorised valve fh00012 23 fwd batt input isolating motorised valve 200 fh0013 torpedo room 24 batt isolating valve control unit fh02550. 25 bollards 26 fairleads 27 engine room door 28 ventilation room hatch 29 forward aux hatch 30 battery pit hatch 31 escape trunk upper hatch 32 bridge trunk upper hatch 33 bridge trunk lower hatch 34 weapon embarkation hatch 35 snorkel air mast cupola access plate 36 forward battery loading bolted hatches 37 aft battery loading bolted hatches 38 midship access hatch navigation bridge element ( ag0044 ) 39 escape trunk upper hatch navigation bridge element ( ag0043 ) 40 cool and cold room 41 bridge shutter ae00104 42 bridge shutter ae00105 43 calibration of pressure gauges and 54 bar reducer and reducing valve