The recently announced Garmin 78sc reaches the pinnacle of the three model 78-series marine handheld GPS lineup. Not merely does this unit float, in addition, it includes a high-sensitivity GPS receiver, and two onboard sensors, an interior electronic compass and barometric altimeter. Black Friday is here to give you amazing discount for your fav products.

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as of May 16, 2022 5:59 pm
as of May 16, 2022 5:59 pm
as of May 16, 2022 5:59 pm
Last updated on May 16, 2022 5:59 pm

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The “c” designation in the model number indicates this lightweight GPS comes preloaded with Garmin BlueChart coastal charts covering U.S. waters as the “s” means sensor equipped.

The grey, black, and silver case measures 6.0-inches tall, 2.6-inches wide, 1.2-inches thick and with a set of AA batteries installed tipped our scale at 7.8 ounces.

The machine will lay flat in a table top rather than slide around much as a result of rubber covering over the battery case door and protective weather flap hiding an external antenna jack, mini USB port, and a Garmin 4-pin serial connection. Rubber side grips improve the feel in hand.

I came across the Garmin 78sc easiest to use while holding it in a single hand and button pushing with the other. However, for more manually adept users you’ll be able to operate the pushbuttons on the top third of leading panel with the thumb without blocking out large portions of the screen.

In the box with this floating handheld marine GPS unit you’ll locate a USB cable to hook up to an individual computer, a wrist strap that attaches at the case bottom, and a pamphlet size quick start manual which lists basic operating instructions.

To find out about your 78-series handheld GPS you’d have to go directly to the Garmin website and browse the full owner’s manual there, or download, or print it.


Eight pushbuttons, with on-button function labels, and an individual 4-way rocker switch provide operational control of most functions. Two of the buttons likewise have their secondary function label printed on the case face next to the key.

The Garmin 78sc has five main pages, each one automatically selected with an individual press of the Page button provides user easy access to many functions. Hitting the Quit button introduces pages backwards order.

The first page in sequence may be the Map page and because the 78sc is preloaded with U.S. marine charts you’ll find highly detailed cartography here.

Next you will dsicover the Compass page using its compass rose, waypoint bearing pointer, and data boxes.

The Trip Computer page is packed with lots user adjustable data boxes. The last main page of interest to mariners is the key menu page.

Each press of the Page button slides a full page icon graphic along an onscreen tape displayed outrageous the last selected page. When you stop pressing Page the brand new appears automatically about two seconds later. This is a very slick interface.

Waypoints and Routes

An easy way to save lots of a present-day position waypoint in the Garmin 78sc has been a press and your hands on the Mark button. This creates the waypoint and introduces a waypoint data page where you could either just hit enter to save lots of it as is or change the associated icon, name, put in a note, or change the latitude/longitude.

An icon could be selected in one of several large groups with names like markers, marine, or outdoors. Waypoint names could be up to long and so are enter with utilizing the rocker and enter key to scroll around an onscreen number and letter display. That is a notch above scrolling though numbers and letters for data entry.

Usage of the built-in route planner made constructing a route super easy. I simple stepped through a few menu pages to choose a fresh route with point chosen from the map. From there you just move the cursor and hit the enter key to include a spot. Pressing quit saves the route automatically.

With a sizable internal memory this Garmin handheld will store up to 2000 waypoints and 200 routes. That’s pretty impressive storage convenience of a lightweight GPS.

Display Screen

Because of the overall size leading panel on the 78-series units has a lot of room for a respectably sized screen. The Garmin 78sc screen occupies the low two-thirds of leading face and includes a portrait layout with a width of just one 1.6-inches and height of 2.2-inches. This TFT color screen posesses 160 x 240 pixel resolution and measures 2.6-inches on the diagonal.

An individual quick press of the off/on button introduces a screen backlighting menu page which includes the date, time, battery level, and GPS signal strength meter, in addition to a 21-position slider. You can modify the screen backlight here or keep doing quick presses of the on/off button and choose either minimum, maximum, or mid-level brightness.

I will rate the screen on the Garmin 78sc excellent. When I viewed it outside in sunny conditions I came across it simple to read with or without my polarized sunglasses.

Odds and Ends

The person overboard function upon this Garmin lightweight GPS is activated by pressing and holding the MOB key and hitting enter to choose navigation back again to the MOB waypoint.

I came across this compass page best for navigating back again to an MOB point.

I came across the Compass page provided the very best default navigation back the MOB point. You’d simply follow the bearing needle in the compass rose and utilize the data box information to learn when you arrive.

To effectively utilize the map page for navigation back you’d have to have previously setup the correct data box information or all you’d have here will be an onscreen course line. I favor to see an MOB function that operates with an individual button push and comes with an computerized screen switch to graphic and numerical navigation data back again to the point.

A rubber covered battery compartment door on the case back houses the batteries and the microSD™ card slot. The mechanism upon this door is new for Garmin. It runs on the spring release slider to open and take away the door. I came across replacing the door to become a two-step process where in fact the end with fasten was pushed in first and the bottom needed to be pressed into place with both of your hands. In the event that you neglected the last step the machine would lose its watertight integrity.

A mini USB port, serial port, and external antenna jack, all on the case back, are covered with a protective weather flap. There can be an optional marine dash mount and power cable available that could facilitate long lasting mounting on your own boat.

This Garmin lightweight GPS will do a radio data transfer with other capable Garmin units. Marine information regarding navigation markers, tides, currents, and near by marine services are available via the Find key.

This Garmin lightweight GPS isn’t just rated waterproof to IPX7 standards, it floats too, an excellent advantage for gear to be utilized aboard a boat. The IPX7 rating means it could be submerged to a depth of just one 1 meter for thirty minutes without suffering any damage.

It passed the dunk and drop test without problems. The unit posesses 1-year warranty.

Final Thoughts

The Garmin 78cs includes a bright display screen, up-to-date intuitive operating software, detailed onboard marine cartography, and also plenty of other marine related information built-in. I’d rate is really as probably the most superior marine handheld GPS units available today.