Maintenance.

From the evidence of your Engineer it appears that in places the slopes are liable to slip down; this is caused apparently by the waves excavating the sand on which the stones lie; this source of damage will not go very far, as the stones get too deep down to be further acted on by the waves; but the damage must be made up as fast as it occurs, probably for a year or two the breakwater must be watched and stone must be in readiness to be placed where damage occurs.