The Sungai Perak is navigable to Tuluk Intan, 30 miles inland for those vessels able to clear the shallow depth in the approach.
Tides—Currents.—At the mouth of the Sungai Perak, the currents attain a rate of 3 to 4 knots at springs, and 1.5 knots at neaps.
The current changes about 1 hour before HW and LW at Bagan Datoh. In the channel E of the sea buoy, the currents set across the channel NW with a falling tide at Bagan Datoh, and SE with a rising tide.
Depths—Limitations.—River and local fishing vessels use a T-shaped concrete pier, witha depth of 3m alongside.
Pilotage.—There are no regular pilots; however the marine department of Teluk Intan will arrange a pilot with a 24-hour notice. The pilot boards at the fairway lighted buoy.