[Vanilla] Embark over coast and ocean immediately?

[fb2017]

<?xml version="1.0" encoding="utf-8"?>
<GameData>
    <Types>
        <Row Type="TRAIT_CIVILIZATION_FEB_POLYNESIA_NAVIGATION" Kind="KIND_TRAIT"/>
    </Types>
    <Traits>
        <Row TraitType="TRAIT_CIVILIZATION_FEB_POLYNESIA_NAVIGATION" Name="LOC_TRAIT_CIVILIZATION_FEB_POLYNESIA_NAME" Description="LOC_TRAIT_CIVILIZATION_FEB_POLYNESIA_DESCRIPTION"/>
    </Traits>
    <TraitModifiers>
        <Row>
            <TraitType>TRAIT_CIVILIZATION_FEB_POLYNESIA_NAVIGATION</TraitType>
            <ModifierId>TRAIT_FEB_POLYNESIA_NAVIGATION</ModifierId>
        </Row>
    </TraitModifiers>
    <Modifiers>
        <Row>
            <ModifierId>TRAIT_FEB_POLYNESIA_NAVIGATION</ModifierId>
            <ModifierType>MODIFIER_PLAYER_UNITS_ADJUST_VALID_TERRAIN</ModifierType>
        </Row>
    </Modifiers>
    <ModifierArguments>
        <Row>
            <ModifierId>TRAIT_FEB_POLYNESIA_NAVIGATION</ModifierId>
            <Name>TerrainType</Name>
            <Value>TERRAIN_COAST</Value>
        </Row>
        <Row>
            <ModifierId>TRAIT_FEB_POLYNESIA_NAVIGATION</ModifierId>
            <Name>Valid</Name>
            <Value>true</Value>
        </Row>
    </ModifierArguments>
</GameData>

 

[fb2017]

Embarking over Ocean Tiles is fine, but it doesn't work when I write is as shown in the code.

 

[fb2017]

I guess I can update the technology from ShipBuilding to for example Sailing (or none??), but I'm not sure how to make it a trait