Pilot doors, which are used as a passage for pilot and are operated by hydraulic power system, are fitted in the side shell plating, one in port side and one in starboard side respectively. This is consisted of several major parts including folding type door body, ladder reel with rope ladder, hydraulic cylinders, power unit and etc.. In closed position the door is flush with the side shell plating, and in open position the door is stowed inside against the perpendicular wall to the shell plate folded into half size by folding hinges.
Watertightness of the door in its closed position is acquired by means of rubber seal installed along the edge of the door in conjunction with the locking devices called cleats.
TECHNICAL SPECIFICATION (Typical)
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1. Operation
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Electro-hydraulic driven
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2. Design head, m
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50 max.
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3. Door opening direction
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Left & Right
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4. Type
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Coaming / Flush
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5. Door opening size
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According to shipyard spec.
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6. Door opening/closing speed by directional valve, sec.
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20~40 at upright condition
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7. Door opening/closing speed by hand pump, sec.
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Within 90 at upright condition
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8. Door closing speed by master key in the wheelhouse, sec.
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Within 60 at upright condition
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9. Electric power source
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According to shipyard spec.
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10. Operating pressure, bar
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150~210
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11. Door body material
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JIS SS400 or equivalent
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12. Door frame material
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JIS SS400 & JIS STKR400 or equivalent
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13. Hydraulic pipe
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JIS SUS316
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14. Painting
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According to shipyard spec.
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15. Recommended hydraulic oil
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Mineral oil ISO VG 32
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16. Certificate
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According to shipyardspec.
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BY Controls, Inc.
#850-2 Cheongcheon-ri, Jillye-Myeon, Gimhae city, Gyeongsangnam-Do, Korea (South) 621-884
Phone 82-55-345-6110
Fax 82-55-345-6115
www.bycontrols.com










