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Nanni N4.38 Raw Water Pump Replacement

 Why? The original raw water impeller pump in the Nanni N4.38 engine is a Johnson Pump 10-24334-01, which is known to develop a leak prematurely at the seal. Other Vision 444 owners have had to replace these original pumps after between 300 and 1000 hours, when they start to leak. Fortunately, Johnson has created a 10-24334-11 part number that supposedly corrects this problem.   Parts, tools and supplies you will need a new Water pump or two, preferable the 10-24224-11 model. We ordered ours from marinepumpdirect.com for ~$250 each.  If they are not in stock, email them at info@marinegate.com . a 27mm deep, 6 point socket .   You don't need a super quality one; it's just to remove the hose barb. Trust me, you need a socket. Ratchet (likely a 1/2" drive) for above. Screwdrvier or nutdriver to remove the hose clamps Hose Remover Tool Optional, but super helpful all over the boat to break the seal when removing hoses! Teflon tape This can be white or yel...
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Pacific Ocean Crossing Planning

French Polynesia Buddy Boat Form ** Are you crossing too? Follow this link to submit your info and find buddy boats for your crossing! ** This link will bring you to a Google Form where you can enter your voyage data and then see a sortable table of results to help find buddy boats! Note, this article is a work in progress and will be updated over time.  If you have something you think should be here, please add a comment (bottom) or find us on WhatsApp (we are in all of the relevant groups). Resources for Crossing the Pacific to French Polynesia Scroll down for the following topics! Reach out if you would like helpful information added to this page. Canal Transiting Info French Polynesia Long Stay Visa Provisioning Guidance Sailing Totems Zoom Series on French Polynesia Arriving in FP Links to Various Resources   Canal Transiting Info We covered this in a previous blog article, which you can find here . French Polynesia Long Stay Visa TBA Provisioning Guidance TBA Sailing To...

Everything you need to know to transit the Panama Canal

Canal Transiting Info Terms: Captain : The person that will be at the helm as the boat transits the canal.  For boats under 65', this can be you.  For boats 65' and over, there will be a Canal Authority Pilot that will in control of the vessel as you transit.  Agent : Is a paid liaison between you and the Canal Authority.  They cost non-trivial money (~$500), but they make the process literally easy. Advisor : A Canal Authority employee that will be on your boat while you are moving in the canal.  They will tell you where to go, and at what speed. Line Handlers : You will need 4.  They can be friends/volunteers, they can be paid, or it can be a combination of both. We hade three amateurs (Sue being one of them) and we hired one professional. Locking : The process of going up or down a lock. Basic Steps and Preparing Contact a Canal Transit Agent , well before your transit. While you can do the process on your own, we felt the expense for our agent was extre...

Victron Isolation Transformer - How to lower the output voltage

Re-configuring a Victron Energy isolation transformer This is a companion article to a YouTube video  covering the same topic. What are they and why do I need one? Victron Energy isolation transformers are often used on boats that connect to shore power in order to provide a means of providing isolation between the shore power and the AC power that exists on the boat.  The transformer sits in between those two worlds and isolates that two power supplies through magnetic flux and an air-gap. The reason this is needed on a marine vessel is because without it, small leakage currents can flow between the earth ground for shore power and the "earth ground" connection on the boat, which is usually connected to water through a propeller shaft, out-drive, sail-drive or sacrificial zincs. That creates a loop and that small leakage current greatly accelerates any galvanic corrosion that naturally happens. Current flows through the water because of the salt content, or even in fresh-wat...

Vision 444 - How to (hopefully never have to) use a Storm Sail

 How to use the Storm Sail on a Vision 444 My fellow Visionary Pierre on Umbono reached out recently wanting to review the steps for deploying the Storm Sail, since he was forecasted to be in less-than ideal sailing conditions in the next day. What better opportunity to write a blog article! This is going out quickly to support Pierre, but I will come back and add pictures and maybe link a video later. Preparation Keep the Storm Sail and everything you need for it somewhere where it is easy to get. We keep ours in the large lazarette under the Cockpit table seating. If you think you might need the Storm Sail, you probably should have the jacklines put out too.  The system we use to deploy the Storm Sail reduces the time we need to be forward, but wearing a life vest with harness and being clipped into the lazy jacks is the way to go here. Our Storm sail is in it's own bag with the following: A port sheet attached to the clew with a bowline A starboard sheet attached to the cle...

A better fresh water pump!

How to revive a failing water pump (and make it better!) This is a companion blog article to a YouTube video we did on the same topic. Disclaimer: You must be electrically and mechanically competent to complete these repairs/upgrades.  If you are unsure of any step, stop and get professional assistance.  You can always reach out to me and I will try my best to help. Our Vision 444 ES catamaran uses two freshwater pumps, one in each hull.  Each one is a 24V diaphragm pump made by Pentair.  Don't worry, the same steps apply to 12V pumps. We have one in each hull, but we also have crossover valves, which when we open, allows one pump to pressurize the water on both sides.  We normally operate them this way so that we drain water from one tank, then we can switch which pump is powered up and pull from the other tank. About a year after we launched, the port side pump started acting up.  It would sputter and get sporadic in running as it got close to the cut-off...

Raising the dinghy, easier!

The Davit System The Vision 444 comes with a Carbon Fiber Davit system that is used to hoist a dinghy.  As time has gone on, some of the exact specifics of the davit system have evolved and changed slightly, but for our boat (Hull #11) and the ones near to it, this is how it operates.  Two Main Steps First, after attaching the dinghy to a forward and aft attachment line, the davit arms are raised; pivoting on axles which mount the davit to the transom of the boat.  This step is accomplished by attaching a line which runs through several blocks to the starboard, aft power winch.  Pressing "2" (low speed) on the winch power buttons and raising the davit into its full upright position, where it can be lashed to the boat with Dyneema loops. Second, is to raise the dinghy to be close under the horizontal beams of the davit arms.  The dinghy attachment lines, that are attached to the dinghy's bridle, run up through a fixed block at the end of the davit arms and then t...