===== OpenSeaMap=====
<code>
<olmap id="olmap" width="800px" height="600px" lat="52.7" lon="4.4" zoom="9" statusbar="1" toolbar="1" controls="1" poihoverstyle="0" baselyr="OSM">
</olmap>

<olmap_osmlayer id="olmap" name="seamark" url="https://tiles.openseamap.org/seamark/{z}/{x}/{y}.png" attribution="OpenSeaMap" visible="true"></olmap_osmlayer>
</code>

<olmap id="olmap" width="800px" height="600px" lat="52.7" lon="4.4" zoom="9" statusbar="1" toolbar="1" controls="1" poihoverstyle="0" baselyr="OSM">

</olmap>

<olmap_osmlayer id="olmap" name="seamark" url="https://tiles.openseamap.org/seamark/{z}/{x}/{y}.png" attribution="OpenSeaMap" visible="true"></olmap_osmlayer>