<aura:component implements="flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId">
<aura:attribute name="boat" type="Boat__c"/>
<lightning:button class="tile" label="{!v.boat}">
<div style="{!'background-image:'+'v.boat.Picture__c'}" class="innertile">
<div class="lower-third">
<h1 class="slds-truncate">{!v.boat.Contact__r.Name}</h1>
</div>
</div>
</lightning:button>
</aura:component>