The Virgin Islands Boater’s Guide to Hurricane Preparation

Hurricane Hole St. John– This guide is dedicated to the sailors and boaters of Coral Bay. Through their collective knowledge and wisdom, this work was possible.

If you are a new boat owner in the Virgin Islands, the approach of hurricane season can be a confusing time. Your hair is guaranteed to be raised by the stories of the long-timers who have seen their boats safely (or not so safely) through storms like Hugo and Marilyn.

What these sailors have to tell you is true, so don’t dismiss their tellings of harbors full of sunk boats, terrifying and sometimes deadly nights of tending lines, and catastrophic damage. Your most valuable source of information on preparing your boat for a hurricane will come from people who have literally weathered the storm.

Some good news, the big megillahs don’t happen nearly as often as you might believe. In the Virgin Islands, decades stretch between hurricanes stronger than a category 1. However, this is not permission to get complacent. In fact, it’s the opposite.

You can’t predict the year a big storm will hit, and a small storm can become a big storm in the blink of an eye. In the boating world, each and every warning must be respected. Lack of preparation has meant the loss of property and injury to those that underestimated the power and unpredictability of mother nature.

What is a Hurricane

Hurricane Marilyn What To Do VITropical cyclone is the generic term for a rotating, organized system of thunderstorm activity that originates over tropical or subtropical waters. In the Atlantic Region, when the sustained maximum winds of a tropical cyclone reach 74 miles per hour, the storm is called as a hurricane. Typhoons and cyclones are the same weather phenomenon, the only difference is where they appear in the world – typhoons are Pacific storms and cyclones appear in the Indian Ocean.

These storms can be massive, reaching 600 miles across. In 2015, Hurricane Patricia reached the highest maximum sustained wind speed ever recorded, clocking in at a whopping 215 miles per hour. Patricia caused $460 million in damage through Central American, Mexico, and Texas, but this cost is small compared to the billions caused by lesser storms which struck more populated areas such as Katrina.

Hurricane Season

The official hurricane season starts June 1st and ends November 30th. This doesn’t mean that hurricanes do not happen outside of these six months, they do. This is just the most active time of the year. My personal observation is that storm activity is at its height in September. The old sailor’s rhyme is a fairly true rule of thumb. However, since its original penning, the season has shifted a bit, running into November.

June too soon
July stand by
August come it must
September remember
October all over . . .

Freak Storm Behavior

Modern meteorology and forecasting is a marvel and a blessing. Atlantic storms usually telegraph their punch as they form low-pressure areas off the coast of Africa. This forewarning gives us ample time to prepare as a storm either forms or doesn’t form. This is the rule, but there are exceptions. Hurricanes can develop, without warning, in the Mid-Atlantic or even closer to the Virgin Islands, and storms that appear to be far out of range have been known to suddenly change tracks, switch back, shoot south or north, or do any number of other unpredicted things.

Be vigilant and be prepared. Don’t expect a storm to do exactly when your weather source says it is going to do.

Anatomy of a Hurricane

Hurricane DiagramAs a hurricane forms, an area of low pressure in the tropical Atlantic become organized, warm air starts to condense, forming clouds and thunderstorm activity. What starts as a tropical wave intensifies into a tropical depression. Condensation causes more warm air to rise, decreasing air pressure further, and sucking in the surrounding air from all directions. As more and more air rushes in to fill the low-pressure area, the storm strengthens and begins to rotate. Once it achieves wind speeds of 39 miles per hour, it is considered a tropical storm. As pressure continues to fall, the strengthening rotation pattern continues which forms the center or eye. The strongest winds of a hurricane are located at the wall of the eye. As wind speed continues to increase, and the storm will build in intensity until it is disrupted by unfavorable conditions such as a land mass, cool waters or wind sheer. At that point, it will begin to decrease in intensity and break apart.

The direction a hurricane approaches from is of particular interest to boaters. If you a protecting a home, the steps you take to prepare are the same regardless of whether the storm is passing from the north or the south. However, for boaters, the way your deploy your anchors, your orientation, or even the harbor you choose can change depending on the wind’s direction.

Saffir-Simpson Hurricane Wind Scale
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Preparation

You should know what you are doing with your boat in the event of a storm well before June 1st. Create a written plan and keep it with your boat documentation and your storm refuge permit(s).

Here are some of the best options:

1) Take your boat out of the water

Select a boatyard with a summer/storm storage package. When shopping for a place to haul out, consider the location of the yard. Try to pick an area that is not located in the flood plain, which is 10 feet or more above sea level, and make sure your boat is stored away from trees or roofs. Your boat needs to be properly decommissioned and all windage removed before storage. For a checklist, click here.

Request that the yard conducts periodic inspections of your vessel and the jackstands while it is in storage. If a large storm is approaching, request that the yard strap your boat to the stands and anchor the stands into the ground. If you put a smaller boat or dinghy on a trailer, make sure your boat is chained to the trailer and the trailer is secured to the ground.

2) Moor your boat in the Hurricane Hole Storm Refuge located in Coral Bay, St. John

Hurricane Hole Coral BayThe National Park, with the aid of the Chesney Foundation and the Ocean Trust, installed a state-of-the-art storm mooring system in Coral Bay in order to provide safe storm berths for resident boaters and to protect the mangroves and ecology of the Coral Reef National Monument. During a storm, boats are tied to the one-inch chain fastened to the ocean floor by heavy-duty sand screws. The mooring system is installed through the eastern bays of Borck, Otter, Princess and Water Creek and is designed to berth 96 vessels in hurricane conditions. 

Permits are available to boat owners who will be in the Virgin Island for at least 50% of storm season. New permits are granted annually at a lottery held around May (sometimes April or June). Once issued, your mooring is renewable each year provided you are in compliance and apply for the renewal.

You won’t believe how they used to grant permits! Read A Remembrance: The 2008 Dinghy Brawl for Safe Hurricane Moorings for the tale by Bob Tis.

Regulation – Do not tie lines to the mangroves or any shore vegetation in Hurricane Hole. Failure to comply will result in the suspension or revocation of your storm refuge permit and a possible fine.

3) Anchor your boat in a protected bay

St. John’s Hurricane Hole is an excellent option for a variety of reasons. However, if you are elsewhere in the Virgin Islands and do not have a registered berth in Hurricane Hole, you can select another protected bay based on the direction of the storm’s approach and other factors. In this case, you need to educate yourself. I can provide a list of bays where vessels have weathered up to category 4 hurricanes, but it is up to you to select wisely, to use your gear correctly, and to use enough of it to see you through with no or minimal damage.

Some of the more known bays boater have used for refuge are Benner Bay and Mandahl Pond on St. Thomas; Mary’s Creek and Cruz Bay on St. John; Krause Lagoon and Green River on St. Croix; and Ensenada Honda on Culebra. Ideally, you want a small area of water that is not crowded, has good holding, and is protected by land. Remember, do your homework! These bays can be your salvation or a death trap depending on the storm’s behavior. Also, many are shallow. You don’t want to arrive at your pre-selected bay of choice only to be blocked because you draw too much to enter.

4) Secure your boat in a slip at a marina

This is not a great option in a big storm, but it can be adequate in a smaller one, especially if the marina is built with floating docks with tall piling. A crowded marine with short pilings and fixed docks is a recipe for disaster. If you do choose to stay at a marina, secure your boat to your slip with at least six to ten lines and make sure that you allow for a storm surge of at least 10 feet.

Ask your marina for their storm policy ahead of time. Some marinas will not let you stay during a hurricane. It will be a very unwelcome surprise if you are told to leave when a storm warning is issued and you do not have a place to put your boat. There are very few marinas that accept storm guests, so don’t count on a marina as a last minute option.

Securing Your Vessel

What To Do Hurricane GuideThe most important thing to remember as you secure your vessel is to stay cool. This can be much more difficult than it sounds. Anchorages get crowded. Tempers flare. Last minute “storm guests” will show up displaying a lack of knowledge, lack of gear, or probably both… and they may choose to anchor right next to you. Remember, everyone around you is trying to protect their property and their lives. Panic and anger can cause oversights and mistakes (not to mention, fist fights), so keep it together. Your priority is to secure your vessel to the absolute best of your ability, then to help others who are less knowledgeable. This help may involve asking or helping someone to move to a more appropriate place.

Hurricane Gear

At the minimum, you will need:

  • Four anchors (the bigger, the better)
  • 800 feet of rode (do not use sheet lines, if at all possible)
  • Chafe gear (fire hose, rug, fabric, duct tape, plastic hose)
  • 6 to 10 shackles (screw pin bow with 1.25” jaw if on chain in Hurricane Hole)
  • Seizing wire
  • Tools (at the very least, a knife, wire cutter, screwdriver, hammer, fasteners, and a channel lock or adjustable wrench)
  • Mask and snorkel

Even better:

  • More anchors!
  • More rode
  • Swivels and thimbles
  • Scuba gear
  • Fenders
  • Whipping twine
  • Screw gun
  • Lithium grease
  • Gloves and eye protection (old-timers swear by a dive mask and snorkel if you have to go on desk during the storm)
  • Foulies
  • Hose clamps
  • Bungs
  • Backup pumps
  • Crowbar
  • Hatchet
  • Toilet bowl wax rings (emergency fix for leaks)

Preparing Your Boat

“He who does not prepare is the cause of the storm.”
— a Coral Bay saying

Congratulations, you have a hurricane plan, storm gear, and your spot; now you need to prepare your boat. Maintenance needs to be done BEFORE the approach of a storm.

Make sure all systems are operational – check your engine, batteries, bilge pumps, generator, and radio. Clear any debris or blockages from your cockpit scuppers and make sure it drains. A water filled cockpit is not a good thing.

Clean your boat’s bottom. Not only will a fouled bottom make it difficult to reach a storm refuge, it will cause a huge amount of drag during the storm and increase strain on your lines significantly.

Reduce windage. Let me repeat that, REDUCE WINDAGE. This is of the utmost importance. If you have a sailboat, take down your roller furling headsails. Do it! To keep it up is a sure way to cause damage to yourself and everyone around you. Please don’t just wrap a line around your jib, take it down!

Sportfishing boat owners should take down as much outrigging and reduce windage from the towers as much as possible.

Remove your bimini, dodger and solar panels. Clear all loose items and lines from the deck. You can even take down your halyards. (Just make sure you have a plan on how to get them back up.)

Have a plan for your dinghy. If at all possible, don’t leave it in the water behind your boat or on the davits. Secure it on shore.

Many, many boats have been lost when their lines have chafed through. You MUST protect your lines with chafe gear. The rub on unprotected lines can cut through in minutes and can easily melt through plastic and rubber hose. Rug or fabric wraps are the most desirable, according to some. Others prefer hose. Either way, you need to use something. In an emergency, you can even slather lines with lithium grease. Be VERY careful to keep the grease off the deck. The last thing you want is to slip and fall into the water.

Chafe is a hazard not only above the water but below. Be aware of rough areas or shell on the chain, rocks or coral by the chain, and protruding seizing wire. If you can finish a line with a thimble, excellent, but most people don’t have this skill. Threading your lines though plastic hose before tying to a chain or anchor is an alternative.

Be extra aware of chafe on overlapping lines. This normally happens when a line with less scope runs under a neighbor’s line with more scope. When the lines tighten, the shorter line pulls up and cuts through the line above it. In Hurricane Hole, it can look like a spiders web under (and above) water. If it is necessary for lines to run over each other, be extra diligent about their overlapping order.

If you have a neighbor, stagger your masts. If they are in line, the side to side motion will cause the masts to collide. Not good.

Batten the hatches. If you have to, take a screw gun and screw them shut. Do, however, have exits if you plan to stay on your boat. Don’t seal yourself in. Ideally, you will not be onboard. I recommend that you do everything you can to secure your boat, then find a safe place on shore to stay. The arrangements for a storm haven on shore should be part of your written plan.

Recommendations for Hurricane Hole and Other Bays

Hurricane FlagsIn Borck, Otter, and Princess, one chain runs along the shore. As you approach your berth, drop your first anchor about 200 feet from where your boat will rest. Most boaters choose to place their vessel stern to shore, some bow, but regardless, next attach the end of the boat facing to shore to the chain with at least two lines, four is better. You might skip running lines from the beam in a smaller storm, but I personally like to attach beam lines to the chain at a wider angle.

From the other end, you will deploy your anchors like the spokes of a wheel. The first will run straight off the bow. (Remember, you dropped it when you arrived.) Run two more out at 30 to 50 degrees from the center line. Depending on how many anchors your have, deploy two more at an every wider angle, around 65 to 80 degrees from center.

The axillary anchors will be dropped at 100+ feet, depending on the depth, from the bow (or stern) by dinghy. To set these, you must dive on the anchors. Make sure they lay correctly and dig them in by hand. If you have scuba gear, you can set your anchors more effectively. I don’t know about you, but I’m no free-diver. Even one minute of work underwater with just a mask makes me a little panicky.

In Water Creek, the procedure is essentially the same. The difference is, in most cases, you will have mooring chain fore and aft. You may want to set at least two anchors in addition, but you can tie to as many points on the chain as you have lines. The other difference is crowding. If everyone who had a berth in Water showed up at the same time, it would be mayhem. Arrive early.

Other bays (and some areas in Hurricane Hole), of course, have no mooring chain but the pattern is essentially same. Ideally, you have four anchors aft, two abeam, and five running from the bow. You say you don’t have 11 anchors and 2500 feet of rode. I know. Nobody does. Do the best you can with what you have.

Place your boat as close to shore are possible without harming the mangroves or the shore area. Try to put your boat in the wind-shadow of the shore vegetation. This can lessen wind strength by up to 50%. Run at least three lines from the bow and two from the stern while maintaining adequate scope. Once you have your foundation, build on that with the additional storm gear that you have.

Scope

scope=lenght of rode
————————
depth of water

or, an example

35 feet=7 to 1
————————
5 feet of water

More scope is better. Ideally, in hurricane conditions, you will have a 10:1 scope; 7:1 is adequate if that is what you can manage. If you don’t have enough rode, use more scope on the anchors to windward at the bow.

For a complete description of scope and anchoring, click here.

What to Have On Board

If you plan to stay on board during a hurricane, keep your boat registration, Coast Guard documentation, proof of insurance, storm refuge permit, and photographs of your boat in a waterproof box or bag. Have enough non-perusable food and drinking water to last two weeks. Stock survival supplies like sunscreen, insect repellent, cash, a camp stove and fuel, first aid kit, flashlights, batteries, candles, and fuses.

What Not to Have On Board

Remove any valuables that you don’t need. Everything is likely to get wet, so you will probably want to store entertainment electronics like televisions, computers and DVD players on shore. iPads and phones should be placed in a waterproof box or bag.

A Storm Approaches

Atlantic Hurricane Season 1995

Atlantic Hurricane Season 1995

Your life is much more valuable than your property. During a hurricane, if you stay on your boat, there isn’t all that much you can do, so choose wisely. Your decision to stay on board is a deadly serious one.

If you need to ease a line, deploy an emergency anchor, throw out a fender, or anything else during the strom, wear eye protection and get back to the safety of your cabin as soon as possible. Running your engine to ease lines may help, but it’s more difficult to do correctly than you might imagine. If you break free, you have the option to start your engine and run yourself aground in soft mud or sand.

Swimming for shore if you think your boat is going down is not a good choice. Stay on board if at all possible.

After the Storm

Hurricane Guide What To Do VIAfter a major hurricane, these islands are said to look like an alien landscape. Every leaf is gone from every tree. The water runs brown with mud, sewage, and debris. Roads are destroyed and the insect population goes wild.

Be careful to treat any cuts and scrapes with antibiotics. Do not swim in the bays and be careful not to swallow any sea water. Infection and contamination are grave dangers in the weeks following a hurricane. If on shore, watch for downed power lines and wear thick soled shoes for protection. The ground can be littered with sharp or jagged material.

After a disaster, good people are at their most helpful. A genuine camaraderie can grow from the aftermath of the shared experience of surviving a major storm. I know you, dear reader, will not become a storm opportunist, but there will be a few bad eggs out there. Keep on your guard, but have faith in your fellow man, and help your neighbors. We will rebuild.

Thanks for reading!

I hope this guide has provided useful information. I’d like to acknowledge Captain Fatty Goodlander, Alan Mohler, Sharon Coldren, Phil Striker, Elliot Hooper, and Sara O’Neill for their help in the creation of this document. Visit the Coral Bay Community Council for more information and a schedule of upcoming Hurricane Preparedness meetings.

How to Prepare Your Vessel to Survive a Hurricane in the US Virgin Islands: VITEMA, 1998, by Captain Fatty Goodlander was the source of a wealth of material for this guide. To read Fatty’s complete 26-page booklet, click here.

For a list of emergency phone numbers, click here.

This guide is brought to you by What To Do-VI. We are the people-powered guide to the VI. Our audience is your audience, and we invite you to join our online community now.

This is a work in process and will be kept online as a resource to new boaters. Please suggest corrections or additions in the comments below. We, as a community, can help others to survive a hurricane.


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Catherine TurnerCatherine Turner spends her time sailing in the Caribbean, blogging from her MacBook Pro on the beach, and sipping coconut water from the nuts that drop on the sand next to her. Before tuning in and dropping out Catherine was a nightclub owner and a resort showgirl. A lifetime ago, she spent a decade chained to a desk as a computer programmer/data analyst. She loves to write, paint, snuggle, and to practice yoga. If she doesn’t answer her phone, she is probably in the middle of the ocean somewhere. Leave a message.

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6 Comments

Dan Boyd

Great article for the newbies.
YES please secure your boat very good so it does not become a battering ram to someone elses boat !
I have rode out many storms in Borck Creek. Many of us there have been together for years. If you can help a neighbor, please do.
I tie my vessel with 6 lines to the chain, my vessel is positioned with the chain midship. Lines run from the bow, midship and stern of my boat on both sides of the vessel. Three anchors from the bow, one towards the West, one towards the Northwest and one towards the Southwest. Then two anchors off the stern at a 45 degree angle.
Even with all that gear a good bit of praying helps too !

Catherine Turner

Thanks, Dan 🙂 Yes, please, everyone share your anchor layouts, strategies for different creeks and bays, or any other tips and techniques. Small things can make a big difference.

Brian B

A few issues: the article addressed the VI, but refers only to St. John sites. Are you suggesting that boats from St. Croix or St. Thomas should head for St. John’s “Hurricane Hole”? It is seriously lacking info about the “Virgin Islands” as. Whole. Therefore, it might be more aptly titled “The St. John Boater’s Guide to Hurricane Preparation”.

The “scope” reference and example is seriously flawed and vague. Scope refers not to the water depth, but to the water depth PLUS the distance from the point the ride exits the boat to the water surface. To include only the water depth is to seriously overstate your scope.

Catherine Turner

We went with the simplest explanation of scope to make it easy for new boaters to understand. I will add an outside link to a complete explanation, but the simple version provided is a safe and easy rule of thumb. Many St. Thomas boats are registered and do use Hurricane Hole. St. Croix, of course, is too far away, as stated in the article. Please include a list of hurricane refuges/safe anchorages on St. Croix. I will add it to the article and credit you. We hoped that VI boaters would add more info about where they go and how they secure their boat on their own islands as a service to new boaters in their area. Collaboration and the many voices of the community are what this site is all about.

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