Northshore Marine Sales and Service is located in Mandeville, north of New Orleans on the northshore of Lake Pontchartrain. We want to be your one-stop shop for boat repairs in our full service yard. We are locally owned and operated on Bayou Castine with easy access to all marinas and Lake Pontchartrain. We are proud and fortunate to be in business for more than 18 years surviving both Hurricanes Katrina and Isaac. When you suspect you have a problem with your boat or trailer, you can call our team. We offer 24-hour emergency service and can tow you to our yard. We will run a full diagnostics test and determine the exact problem to get you up and back on the water.