diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75ffbc9..96053c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v3.4.0] - 2023-04-25
+
+### Added
+
+* Added a fourth "Hold or Berth" option called "Tender Bay" (see page 89 of the *Continuum* rules). It looks and works exactly the same as a "Boat Bay" but costs points.
+* Added the option to add FTL tug capacity to any ship.
+
 ## [v3.3.2] - 2023-04-17
 
 ### Added
diff --git a/package-lock.json b/package-lock.json
index 5005dbc..2939a64 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,18 +1,18 @@
 {
   "name": "ftshipbuilder",
-  "version": "3.3.1",
+  "version": "3.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ftshipbuilder",
-      "version": "3.3.1",
+      "version": "3.4.0",
       "license": "MIT",
       "dependencies": {
         "@zerodevx/svelte-toast": "^0.9.3",
         "canvg": "^4.0.1",
         "fast-xml-parser": "^4.2.0",
-        "ftlibship": "github:perlkonig/ftLibShip#v2.0.3",
+        "ftlibship": "github:perlkonig/ftLibShip#v2.0.4",
         "lz-string": "^1.5.0",
         "nanoid": "^4.0.2",
         "robust-point-in-polygon": "^1.0.3",
@@ -1136,8 +1136,8 @@
       }
     },
     "node_modules/ftlibship": {
-      "version": "2.0.3",
-      "resolved": "git+ssh://git@github.com/perlkonig/ftLibShip.git#e249e51a09698185cf78a5818ce52b83bd77a7f2",
+      "version": "2.0.4",
+      "resolved": "git+ssh://git@github.com/perlkonig/ftLibShip.git#536ae731a26a135893d08d8adfa5a4252140f11b",
       "license": "MIT",
       "dependencies": {
         "ajv": "^8.12.0",
diff --git a/package.json b/package.json
index a156223..af44366 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ftshipbuilder",
   "private": true,
-  "version": "3.3.2",
+  "version": "3.4.0",
   "description": "A web-based tool for generating valid Full Thrust ships",
   "author": "Aaron Dalton <aaron@daltons.ca> (https://www.perlkonig.com)",
   "license": "MIT",
@@ -40,7 +40,7 @@
     "@zerodevx/svelte-toast": "^0.9.3",
     "canvg": "^4.0.1",
     "fast-xml-parser": "^4.2.0",
-    "ftlibship": "github:perlkonig/ftLibShip#v2.0.3",
+    "ftlibship": "github:perlkonig/ftLibShip#v2.0.4",
     "lz-string": "^1.5.0",
     "nanoid": "^4.0.2",
     "robust-point-in-polygon": "^1.0.3",
diff --git a/src/components/Builder.svelte b/src/components/Builder.svelte
index 532384a..357db6b 100644
--- a/src/components/Builder.svelte
+++ b/src/components/Builder.svelte
@@ -43,6 +43,7 @@
 
     let ftl: boolean;
     let ftlAdvanced: boolean;
+    let transferMass = 0;
     ship.subscribe((obj) => {
         const idx = obj.systems.findIndex(x => x.name === "ftl");
         if (idx === -1) {
@@ -72,6 +73,20 @@
         $ship = $ship;
     }
 
+    const updateTransferMass = () => {
+        if ( (transferMass === undefined) || (transferMass === null) ) {
+            transferMass = 0;
+        }
+        if (transferMass % 5 !== 0) {
+            transferMass = Math.ceil(transferMass / 5) * 5;
+        }
+        const idx = $ship.systems.findIndex(x => x.name === "ftl");
+        if (idx !== -1) {
+            $ship.systems[idx].transferMass = transferMass;
+        }
+        $ship = $ship;
+    }
+
     let shipSystem: string;
     const addSystem = () => {
         if (shipSystem !== undefined) {
@@ -400,6 +415,13 @@
                         <input type="checkbox" bind:checked="{ftlAdvanced}">
                         Advanced FTL
                     </label>
+                    <div class="field">
+                        <label class="label" for="transferMass">Tug capacity (transfer mass)</label>
+                        <div class="control">
+                            <input id="transferMass" class="input" type="number" placeholder="Tug capacity (transfer mass)" bind:value={transferMass} on:blur={updateTransferMass}>
+                        </div>
+                        <p class="help">Must be a multiple of 5. Ship doesn't update until you exit the field.</p>
+                    </div>
                     <MassPts
                         obj={systems.getSystem($ship.systems.find(x => x.name === "ftl"), $ship)}
                     />
diff --git a/src/components/SysDisplay.svelte b/src/components/SysDisplay.svelte
index 281b5e4..58d8af3 100644
--- a/src/components/SysDisplay.svelte
+++ b/src/components/SysDisplay.svelte
@@ -78,7 +78,7 @@
         <Type
             prop={prop}
             idx={idx}
-            choices={[["passenger","Passenger Berth"],["troop","Troop Berth"],["cargo","Cargo Hold"],["boat", "Boat Bay"]]}
+            choices={[["passenger","Passenger Berth"],["troop","Troop Berth"],["cargo","Cargo Hold"],["boat", "Boat Bay"], ["tender", "Tender Bay"]]}
         />
         <Capacity
             prop={prop}
diff --git a/src/components/SysDisplay/Ratio.svelte b/src/components/SysDisplay/Ratio.svelte
index f834668..dbf3c73 100644
--- a/src/components/SysDisplay/Ratio.svelte
+++ b/src/components/SysDisplay/Ratio.svelte
@@ -19,7 +19,7 @@
             sys.ratio = undefined;
         }
         if (sys.ratio === undefined) {
-            if (sys.type === "boat") {
+            if ( (sys.type === "boat") || (sys.type === "tender") ) {
                 placeholder = 1.5;
             } else if (sys.type === "passenger") {
                 placeholder = 1/4;