In this Act, unless the context otherwise requires—

• “the Act of 1961” means the [1961 c. 33.] Land Compensation Act 1961;

• “the Act of 1965” means the [1965 c. 56.] Compulsory Purchase Act 1965;

• “the Act of 1991” means the [1991 c. 57.] Water Resources Act 1991;

• “the Board” means the British Waterways Board;

• “the Corporation” means the British Coal Corporation;

• “the definitive map” means the definitive map for the area forming part of the definitive map and statement as defined by section 53 of the [1981 c. 69.] Wildlife and Countryside Act 1981;

• “enactment” includes any order, byelaw, rule, regulation, scheme or other instrument having effect by virtue of an enactment;

• “the limits of deviation” means the limits of deviation shown on the deposited plans;

• “the new navigation” means Work No. 2, Work No. 12, Work No. 12A and so much of Work No. 1 as is downstream of its junction with Work No. 2 together with all works and conveniences connected therewith;

• “the navigation” means the Aire and Calder Navigation of the Board;

• “the railways board” means the British Railways Board;

• “the river” means the river Aire;

• “the Rivers Authority” means the National Rivers Authority;

• “the superseded length” means so much of the navigation and its facilities as is not required in consequence of the construction of the new navigation;

• “the transfer date” means the date agreed or determined under section 41 (New navigation to be commercial waterway, etc.) of this Act;

• “the tribunal” means the Lands Tribunal;

• “the works” means the works authorised by this Act and includes those works as altered, replaced or re-laid under subsection (3) of section 5 (Power to make works) of this Act.

References in this Act to reference points shall be construed as references to Ordnance Survey National Grid reference points.

All areas, points, directions, distances and lengths stated in any description of works, powers or lands shall be construed as if the words “or thereabouts” were inserted after each such area, point, direction, distance and length and distances between points on a waterway shall be taken to be measured along the centre line of the channel of the waterway.

Unless the context otherwise requires, any reference in this Act to a work identified by the number of such work shall be construed as a reference to the work of that number authorised by this Act.

References in this Act to points identified by letters shall be construed as references to the points so lettered on the deposited plans.