26. For the purposes of Parts C, D and E, unless expressly provided other-wise-

"auxiliary steering gear" is the equipment other than any part of the main steering gear necessary to steer the ship in the event of failure of the main steering gear but not including the tiller, quadrant or components serving the same purpose;

"chemical tanker" is a cargo ship constructed or adapted and used for the carriage in bulk of any liquid product listed in either

{aj Chapter 17 of the International Code for the Construction and

Equipment of Ships Carrying Dangerous Chemicals in Bulk adopted by the

Maritime Safety Committee by resolution MSC.4[48), hereinafter referred to as "the International Bulk Chemical Code", as may be amended by the

Organisation; or

(bj Chapter VI of the Code for the Construction and Equipment of

Ships Carrying Dangerous Chemicals in Bulk adopted by the Organisation by resolution A.212(VII), hereinafter referred to as "the Bulk Chemical

Code", as has been or may be amended by the Organisation, whichever is applicable;

535 11Control stations" are those spaces in which the ship's radio or main navigating equipment or the emergency source of power is located or where the fi.re recording or fi.re control equipment is centralised;

"dead ship condition" is the condition under which the main propulsion plant, boilers and auxiliaries are not in operation due to the absence of power;

"deadweight" is the difference in tonnes between the displacement of a ship in water of a specific gravity of 1.025 at the load water-line corresponding to the assigned summer freeboard and the lightweight of the ship;

"emergency condition" is a condition under which any services needed for normal operational and habitable conditions are not in working order due to failure of the main source of electric power;

"emergency source of electrical power" is a source of electrical power, intended to supply the emergency switchboard in the event of failure of the supply from the main source of electrical power;

"emergency switchboard" is a switchboard which in the event of failure of the main electrical power supply system is directly supplied by the emergency source of electrical power or the transitional source of emergency power and is intended to distribute electrical energy to the emergency services;

"gas carrier" is a cargo ship constructed or adapted and used for the carriage in bulk of any liquefied gas or other products listed in either -

{a}

Chapter 19 of the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk adopted by the

Maritime Safety Committee by resolution MSC.5(48), hereinafter referred to as "the International Gas Carrier Code", as may be amended by the

Organisation; or