Kayak fishing safety

What safety items would you need for kayak fishing in a large river that has small boats and large container ships? I also need to know general safety items as well. Can anybody help me out?

basic safety gear
Personal Flotation Device (PFD)

Spray Skirt (if you’re in a Sit INside Kayak)

audible signaling device (whistle, horn etc)

visible signaling divice (mirror, hand held flares, stobe, bright flashlight, etc)

Bilge Pump & Bailer/Sponge

Paddle Float

First Aid Kit

Tow Line