First you'll have to get to Port Klang.

1. Port Klang is served by KTM Komuter line (Sentul - Pelabuhan Klang) electric trains. The electric train services links to Klang, Kuala Lumpur, Petaling Jaya and Shah Alam. The train stops at the Port Klang Komuter station across the ferry terminal. Train frequency is about every 20 mins.
2. Driving: Main roads that link the Port Klang town, Southport and housing are are Persiaran Raja Muda and Jalan Pelabuhan Selatan.
3. Once you reached Port Klang. You can take the ferries. These are hourly ferries to Pulau Ketam. It has a shape of an airplane. One way ticket costs RM 8 for Adult and RM 5 for children (below 12). Services are hourly unless it's weekends & holidays, which is every 45 mins. Tickets are sold on board or and sometime at a stall at the jetty entrance.

Speedboat Schedule

ALIBABA Ferry Schedule

If you are feeling fancy, you can charter a helicopter. There is a helipad right infront of Sea Lion Hotel.