Knots, Nautical Miles & Land Miles
Knots, Nautical Miles & Land Miles: making sure you get there: Ever found yourself scratching your head when a salty skipper shouts, “We’re cruising at 15 knots!” and you’re left wondering if that means you’ll make it home in time for sundowners? Fear not — let’s untangle the knotty world of knots, nautical miles, and their land?based cousins.
First things first: a nautical mile isn’t just a fancy sailor’s unit. It’s pegged to the Earth itself — one minute of latitude equals exactly 1.852 kilometers. That’s why mariners swear by it; it ties navigation directly to the globe. Compare that to a land mile (the one you use when bragging about your morning jog), which clocks in at 1.609 kilometers. Close, but not quite the same.
Now, speed. A knot is simply one nautical mile per hour. So:
- 1 knot = 1.852 kph = 1.151 mph
- 10 knots = 18.52 kph = 11.51 mph
- 20 knots = 37.04 kph = 23.02 mph
Suddenly, that skipper’s 15?knot boast translates to about 28 kilometers per hour — not exactly Formula One, but steady enough to get you across the bay with style.
Why the fuss? Because when you’re plotting a passage, every decimal counts. A 100?nautical?mile hop is 185 kilometres, not 160. Mix up your miles and you’ll either run out of fuel or arrive late to the sardine run. Neither is a good look.
So next time someone drops “knots” into conversation, you can smile knowingly. Whether you’re measuring fish migrations, coastal cruises, or just impressing landlubber friends, you’ve got the conversions at your fingertips.
Sardines may swim in schools, but now you’ve schooled yourself in the art of nautical math. Anchors aweigh — and calculators away!

Sardines and Sighting Maps
Here are the links to existing and past Sardine Sighting Maps. With instructions on how to install The Sardine News right on your phone, tablet, or even desktop.
Channels
Brucifire Surf Retorts – highly entertaining surf reporting
Master Watermen – news from way down deep
The Sardine News – neva miss a single sardine
FishBazaruto – 1000 pounds plus
MYDO Tackle Talk – highly technical sport fishing
Surf Launching Southern Africa – getting out there safely
Water Woes – complain about your municipality here
Websites
umzimkulu.co.za – fishing, charters, accommodation
umzimkuluadrenalin.co.za – will get you right out and onto the edge
thesardine.co.za – never miss a single sardine
masterwatermen.co.za – news from under water
fishbazaruto.com – dreams are out there
brucifire.co.za – surf retorts
fishmad.co.za – destination Madagascar
andantelodge.co.za – Transit luxury in Pretoria