Never used a v50, you need to check the official towing weight, but I suspect you would be ok given the small rig. There are quite a few towing/caravan websites that enable you to check your cars capability.
Looking at your photo I'm guessing its well under 750kg. I'd me more concerned on whether the trailer was suitable, than the tow car. Make sure you check out the regulations regarding lighting, etc, as I can't see in the photo how your handling lighting. Looks like you are also missing the safety chain off your hitch.
Suggest you also check whether the boot of a v50 is big enough for all your kit, as its quite compact, and I doubt long enough to store an outboard if you needed to, but I'm only guessing.