I don't have electronic information but if you go to the Sail Malaysia
website you can download their cruising guide and there is a very good write-up on the tides and currents in the Straits of Malaca. I also put together a GPX file that goes along with the cruising guide that you can download on the same site and install it is a layer file in OpenCPN
Read the tide & current
section a few times and pay close attention to the locations of the tides stations when it references
them. Many of the references
are for Penang which is more that 100 miles from the south end of the straits.
Basically, current flows NNE on an ebb tide. If you are heading north and planning to day hop, plan your southern departure in the morning at high tide, particularly around the highest tides. You can go north with the current all day! Suitable anchorages
are far apart for a 6kt monohull
so using the current makes a huge difference as current can approach 3kts in places. The further north you go the later the high tide occurs, so you don''t overrun it. If, at your new location, high tide is occurring to late, remain anchored for a day and let the tide become more favorable.
A couple years ago I used this strategy and had one of the fastest, most enjoyable trips up the Straits arriving at my next anchorage early in the afternoon. Spending the time to pay close attention to the tides times and current flows can really help. Sadly this strategy doesn't help much going south and if you're planning on going non-stop your going to get what you get. Better in that case to go when tides are not extreme.
Note - If you download the Sail Malaysia
cruising guide and want to use the GPX file rename the cruising guide to replace the dashes with spaces if they are present. The guide was put on the website with dashes and that was an error. The GPX file won't find the guide if the dashes are in the file name.