Under power with sails flying

[Diva27]

Originally Posted by CLucas

Nicely done, but you've got me thinking...

"Snakes On a Boat" Starring Samuel L. Jackson

Synopsis...
When an unsuspecting bystander witnesses a brutal mob murder, it falls to FBI agent Neville Flynn (Jackson) to escort his charge safely from Hawaii to Los Angeles to testify. But in an act of self-preservation, the crime boss in question smuggles hundreds of poisonous snakes onto a MacGregor 26 in a crate, timed to release its deadly cargo halfway over the Pacific Ocean. Flynn, along with a frightened captain and crew, must band together in a desperate attempt to survive the “flight of their lives.”

Oooh, very close. Maybe he needs to smuggle them in the water ballast tanks. Then they all slither unexpectedly from one side to the other, capsize the boat, and now it's the Poseidon adventure with poisonous reptiles dropping out of the hull onto people's heads.
I need more coffee.

[Boasun]

Snakes on a boat...... gesh! (notice that I am being very polite here. Could be using stronger words.) And may all of the nastiest vermin infest your boat for a week.
Wait that happened to me. Took over a boat fresh from Mexico and I had to carry a stick to keep the cockroaches from stealing my coffee cup. So only a week is all I will use in putting that particular hex on you. Had to bug bomb that vessel thrice before we had wrestled control of the vessel from those nasty critters.

But this thread is on day shapes used by sailing vessels and other vessels may be included also. So lets keep on track here. Please!?

[Diva27]

I've pretty much made up my mind about the cone and ball when it comes to the Great Lakes and other lakes and inland waters, at least on the Canadian side of the border. As per the previous posts, the cone use is exempted but optional. The way the colregs are worded with regard to the ball, it seems pretty clear a single white light on a vessel less than 50 meters is the proscribed strategy. Which explains why I've never seen either of these devices in use where I sail.

[Zanshin]

I don't have the colregs available here, but the ball is for day marks and the light for night; the ball is used when anchoring in areas that are not considered anchorages - I'm sure someone will correct me if I am wrong.

[sailingdog]

Zanshiin-

In the US—under inland water rules—at least, if you are anchored in an area marked as an anchorage a dayshape is not required. In areas that are not marked as anchorages, a dayshape is required. Under International rules, a ball dayshape is required on all anchored vessels.

[Diva27]

Originally Posted by sailingdog

Zanshiin-

In the US—under inland water rules—at least, if you are anchored in an area marked as an anchorage a dayshape is not required. In areas that are not marked as anchorages, a dayshape is required. Under International rules, a ball dayshape is required on all anchored vessels.

Here are the rules as presented in the Canada Shipping Act, under Collision Regulations:

Rule 30

Anchored Vessels and Vessels Aground--International

(a) A vessel at anchor shall exhibit where it can best be seen:

(i) in the fore part, an all-round white light or one ball,

(ii) at or near the stern and at a lower level than the light prescribed in subparagraph (i), an all-round white light.

(b) A vessel of less than 50 metres in length may exhibit an all-round white light where it can best be seen instead of the lights prescribed in paragraph (a) of this Rule.

(c) A vessel at anchor may, and a vessel of 100 metres and more in length shall, also use the available working or equivalent lights to illuminate her decks.

(d) A vessel aground shall exhibit the lights prescribed in paragraph (a) or (b) of this Rule and in addition, where they can best be seen:

(i) two all-round red lights in a vertical line,

(ii) three balls in a vertical line.

(e) A vessel of less than 7 metres in length, when at anchor, not in or near a narrow channel, fairway or anchorage, or where other vessels normally navigate, shall not be required to exhibit the lights or shape prescribed in paragraphs (a) and (b) of this Rule.

(f) A vessel of less than 12 metres in length, when aground, shall not be required to exhibit the lights or shapes prescribed in subparagraphs (d)(i) and (ii) of this Rule.

Anchored Vessels and Vessels Aground--
Canadian Modifications

(g) In the Canadian waters of a roadstead, harbour, river, lake or inland waterway, a barge or an inconspicuous, partly submerged vessel or object may, when at anchor, exhibit the appropriate all-round white lights prescribed by paragraphs 24(g) and (k) to (m) instead of the lights prescribed by paragraphs (a) to (c) of this Rule.

(h) Notwithstanding this Rule, in the Canadian waters of a roadstead, harbour, river, lake or inland waterway, a barge or an inconspicuous, partly submerged vessel or object, when at anchor, is not required to exhibit any light while located within a recognized mooring, storage or booming area that is not an area in or near a narrow channel or fairway or where other vessels normally navigate.