The normal care and prudence required in narrow waters should suffice in the fairway. Some difficulty has at times been experienced by strangers in recognizing the entrance to Selat Riau on account of the numerous islands in its vicinity.
Care should be taken to guard against the strong tidal currents often encountered in this area.
Eastern Channel through Selat Riau can be used by small vessels proceeding through a swept channel in the S part of the E side of the strait. The least depth in the fairway of this channel is 6.9m.