Here are some links that you may find helpful:

Marlborough – Brilliant Every Day

Nelson i-site

100% Pure New Zealand

New Zealand Tourism Guide

Department of Conservation/French Pass Campground

Mistletoe Bay Eco Village

French Pass Sea Safaris

Ngaio Bay Homestay

Marlborough Accommodation

Bed and Breakfasts in Picton and the Marlborough Sounds

Metservice

Swell-map/Paddock Rocks (near French Pass)

Swell-map/Walkers Rock (outer Queen Charlotte Sound)

Inter islander Cook Strait Ferry

Bluebridge Cook Strait Ferry

Jack Tar Sailing