You are limited to the speed posted on these signs in the direction indicated. Here, we're limited to 4 knots in both directions. Let's take it slow.

Any persons or apparatus being towed will share the same distance off rules as the boat they are being towed from. The trick for this question is not the towed person, but the other vessels and structures, which is 30 metres when doing 6 knots or more.

6 knots - 30 metres

Remember the phrase, "Upstream, Red Port Left". When going upstream, the red port marker is on the left hand side of your vessel.

Any persons or apparatus being towed will share the same distance off rules as the boat they are being towed from. The trick for this question is not the towed person, but the person in the water, which is 60 metres at any speed.

Remember the phrase, "Upstream, Red Port Left". Using this phrase, we can determine that the red port marker is on the left, and the green starboard marker is on the right when going upstream.

Now, as this question asks about downstream, the markers are now kept on the opposite side. So instead of red being on your left, it's now on your right.

On the water, give way to your right. As the red vessel is on your right, keep clear; take substantial action to keep well clear

If you don't wear your lifejacket, it cannot save your life.

At night, you can't tell if a non-flashing white light is a torch, car headlight or someone playing on their phone. Let your imagination run wild, it can be almost anything.

Remember the phrase, "Upstream, red port left". If you know the what side the red port marker is to be kept on, the green starboard marker is simply the opposite.

It is downright moronic to let a child go boating without a lifejacket. Keep them safe, fit them with a lifejacket at all times.

If you find yourself on course for a head-on collision, turn to your starboard (right-hand) side. Both vessels must do this to avoid a collision.

You're the skipper, you're responsible. If you think there's only one thing to look out for, you're gonna have a bad day.

Boat responsibly and go easy on the throttle. If a sudden danger were to present itself, you should travel at a speed where you have enough time to safely avoid it.

Inflatable lifejackets are excellent, but they require a fair bit more maintenance than regular lifejackets. Take it in to get serviced regularly (or do it yourself if you are capable) and don't wear it again after it's been activated, unless you replace the gas cartridge first.

Drifting is when you are not anchored but are still moving along the water. You're still underway.

So, if you are underway at night, switch on both sidelights and your all-round white light.

Sailing vessels tend to have gigantic sails that will sometimes block out light. If you can't see the all-round white light, there's a good chance it's a sailing vessel.

To avoid a collision, drive on the right when in a channel.

Because we can see both side lights and the all-round white light, we can determine that we're on course for a head-on collision.  (You usually can't clearly see the sidelights from the rear of a boat)

As such, both vessels should turn to their starboard (right-hand) side.

Remember the phrase, "Upstream, Red Port Left". Using this phrase, we can determine that the red port marker is on the left, and the green starboard marker is on the right when going upstream.

Now, as this question asks about downstream, the markers are now kept on the opposite side. So instead of red being on your left, it's now on your right.

Powered vessels have much more control of their steering and speed compared to a sailing vessel, which is largely at the mercy of the winds and currents.