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However, updating ENCs requires care and a proper understanding of the process. In Ecdis Procedures Guide (Witherby), Malcolm Instone says that as the updating process can be lengthy, it is best done when the vessel is in port. A risk assessment should be carried out before updating ENCs when a vessel is under way, because some systems only allow updating to take place if safety monitoring is turned off. In addition, updating diverts computer capacity from its primary task. He notes that all extant routes will need to be re-checked following an update.

In fact, The Electronic Chart (Geomares: Hecht, Berking, Jonas and Alexander) says one of the major benefits of using electronic charts is the ability to update the electronic chart database automatically. This is particularly true of ecdis, which has specific functions and requirements to facilitate the updating process.

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high capacity feed water pressure regulator is for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, ...

Once Trethewey has the measurements and marks he needs, he uses a tubing cutter to trim the pipes to the correct length. Then, he cleans the cut ends and the inside of the elbows with PVC primer.

Finally, Trethewey reopens the water supply and starts a test cycle for the washer. A light on the valve indicates that the washer is on. If the pressure on the hoses releases when he pauses the fill, the installation is complete.

Folio management and updating charts is an endless process, generally falling on the second officer. Everyone is busy during the brief periods modern ships spend in port, so when does this officer find time for this work? It is true that modern shipboard communications can speed up the delivery process for updates. Even so it can be an onerous business ensuring that paper charts are fully up to date.

Trethewey can now hold the valve assembly against the wall and mark where to cut the straight piping so the valve fits just outside the outlet box.

After everything’s primed, Trethewey uses PVC cement to join the pipe assemblies together, following the manufacturer’s instructions.

Updating electronic navigation charts (ENCs), on the other hand, should take less time and minimise the possibility of errors. Updates can be delivered in a variety of ways, including CDs and remote methods, making use of modern shipboard communication systems which, in some cases, involves direct connection to the ecdis unit.

Automatic shutoff valves can be bulky, so they commonly have space for fasteners. Trethewey makes two marks on the wall over the outlet box, predrills the holes, inserts hollow-wall anchors, and attaches mounting screws to secure the valve assembly in place.

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Important navigational information is also circulated by means of temporary and preliminary (T&P) notices to mariners. Primar, operated on a non-profit basis by the Norwegian Hydrographical Service, says the use of T&P information is considered an essential part of keeping navigational charts up to date, but not all ENC producers include T&P information in their ENCs, while those that do follow a number of different practices.

First, Trethewey closes the hot and cold water shutoff valves that supply water to the washer and disconnects the supply hoses from the valves with pliers. It’s best to have a rag ready so you can catch any water that spills from the hoses.

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Incorporating these precautions can prevent any accidents or damage during installation. It’s also beneficial to inform anyone in the household about the ongoing work to avoid disturbances.

The automatic shutoff valve has both a power cord for the wall socket and its own receptacle on the front face. When Trethewey plugs the washer’s power cord into the valve, it ties the valve’s position to the washer’s power draw. A light on the valve lets him know the valve is ready to work.

The automatic valve Trethewey uses has a leak sensor that goes on the floor behind the washing machine to detect moisture. He plugs it into a designated port and places the sensor in a strategic spot, close enough to detect even minimal water presence.

Many automatic shutoff valves come in a kit that can connect to the existing valve with adapters. Trethewey temporarily installs the brass adapters on the existing shutoff valves and inserts 1/2-inch PVC piping into the ball swivels inside the adapters. Then, he attaches 1/2-inch PVC elbows to the brass connections on the underside of the automatic shutoff valve.

Now, it’s time to put the hoses back on. Trethewey uses pliers to tighten the two brass adapters, then reattaches the hot and cold water supply hoses to the threaded connections on the automatic shutoff valve.

To inform users about the status of production of T&P notices in ENC update files, Primar and IC-ENC collected information from the individual hydrographic offices distributing ENCs through the regional ENC co-ordination centres (RENCs), presenting the results in a table which can be accessed via the Primar website. Prudent shipowners and managers should discuss all such issues when selecting an ENC supplier. ECDIS

The shutoff valve shall be located in the same room as the appliance. The shutoff valve shall be within 6 feet (1829 mm) of the appliance, and shall be ...

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While ENC updates are normally performed automatically, the performance standards say ecdis should also be capable of accepting manually entered updates to ENCs. On ships with paper charts as ecdis back-up, the workload must actually be increased. Furthermore some flag states require the carriage of some paper charts, even when dual ecdis is fitted, to provide the required back-up.

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An automatic washing machine shutoff valve gives you an extra layer of protection against flooding and water damage. It detects when you’re actively washing clothes and only allows water to flow when the washer has a cycle running. Modern versions of the device can even detect leaks and shut off the water supply in advance. In the above video, This Old House plumbing and heating expert Richard Trethewey shows how to install one for added peace of mind—and potentially even lower insurance premiums. Learn more in our guide below.

The demands placed on the navigator by the onboard management of a paper chart outfit vary, depending on the nature of a vessel’s trading pattern. A ferry on a short route will need very few charts. But at the other end of the scale, the burden imposed by a vessel prepared to carry cargoes anywhere in the world is considerable.

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