916 BEroRT— 1888. ' 



have sea kants more inclined to the westward, but at varying angles ; the present 

 groynes are to be strengthened and extended by similar sea kants pointing upwards, 

 with two exceptions, where they point downwards. This form has been adopted 

 with the present hotel-groyne; in effect Colonel Montagu's bays would be much 

 wider than those of his predecessor, but the openings to seaward would be covered or 

 enclosed in a measure by the sea kants. Two new groynes are proposed east of the 

 road to Blue Town and kants to the three existing groynes west of the hotel-groyne, 

 a new groyne between the sixth and seventh groyne west of the N.E. return at the mill 

 and No. 7 kants or elongations along the eastern frontage generally. The absolute 

 length of new groyne work would be less than one-half that proposed in the first 

 plan, but as some of these are treble groynes with two windward ledges, equal in 

 extent of work to rather more than two ordinary groynes, and as a certain portion 

 have one windward ledge, equal to rather more than one and a half common groyne, 

 the absolute length of groyne work, i.e., piling and stonework, will be nearly doubled ; 

 so that, considering the larger piles entailed, there would be no great saving in the 

 amount as compared with the plan of last year. 



This plan abandons the defence of the east recess, but the first plan would not 

 now meet the requirements of that length without (to carry out its principle of 

 continuous groynes) the addition of six new groynes in lieu of the old ones, which 

 have continued to go to decay, and which are now too far seaward of the shingle to 

 be of service. 



I beg now to report, after a careful examination of the shore, and consideration 

 of these plans, that I recommend the erection of three new groynes west of the hotel- 

 groyne, viz., one opposite the end of the road to Blue Town and two others east of 

 this, with intervening spaces or bays of about 125 feet up to the present third groyne 

 west of the hotel-groyne ; that these groynes should each be 150 feet in length ; that 

 for two-thirds their length — viz., 100 feet— they should bear N.E. by compass, which 

 would be at right angles to the general trend of the shingle at high water between 

 Cheney Point east and Garrison Point west, but presenting a slightly obtuse angle 

 windward — viz. 98° — to the immediate length of wall they would front; that the 

 extremities for 50 feet in length should be 45° more westerly in direction, or due 

 north by compass, forming a sea kant ; not that I think these kants collect or retain 

 the shingle, but that they assist very materially in raising the foreshore by promoting 

 a deposition of sand and defending the bays under their lee ; that the main length of 

 groynes for the straight portion should be laid at a slope of about 10 horizontal to 1 

 vertical, the south ends or commencements at the top level with high water, spring 

 tides, and that the sea kants should be laid at double the above inclination — viz. 20 

 to 1 — kept not more than 18 inches above the foreshore, and the main groyne not 

 more than 3 feet above the mean level of the neighbouring shore ; if the above 

 inclination cannot be readily got, one of from 7 to 10 to 1 may give that elevation; 

 that these groynes for the centre 50 feet should be formed of four rows of piles and 

 three widths of stone, the eastern ledge thus formed to be 1 foot below the summit of 

 centre width, and the inner or western ledge 2 feet below the same, and that the 

 sea kant should have one outer or N.E. ledge 9 inches from the summit of said 

 kant ; that the existing groynes should be repaired where necessary ; that the third 

 groyne west of the hotel-groyne should be lengthened to 100 feet, and that its sea- 

 ward half should be strengthened by a windward ledge, and where the shore is low 

 (but not otherwise) a leeward ledge also, and that it should have a sea kant of 50 

 feet added to it, constructed the same as those of the new groynes; that the second 

 groyne west of the hotel-groyne should be treated in the same manner ; that the first 

 groyne westward of the hotel-groyne should be left as at present with any necessary 

 repairs ; that the first groyne east of the hotel-groyne should be lengthened to the mean 

 length of the three eastward in a N.E. direction, with a windward ledge; that the 

 three groynes eastward should be merely repaired and strengthened as before ; and 

 that the next groyne eastward and each alternate groyne subsequently should have 

 sea kants bearing north — viz. the third, fifth, seventh, and ninth groynes from the 

 eastern groyne at the return in the wall. 



The breach in the stone wall commencing about 40 feet east of the road to Blue 

 Town, and extending about 100 yards eastward, should be made good; and I recom- 

 mend that, as so great a length has been breaclied, a much easier slope — say- 

 double that of the present wall — should be adopted, in order to try its effect on this 

 length ; it might be rounded off to meet the present work at the sides, the sea 

 margin to be carried well down under the foreshore and finished with a deep trench 

 and footing of large stones, the large stones beicg selected for the lower pa:t of the 



